This is a great point - I see SpaceX Starlink advertising a lot, both online and in person (billboards, mailbox drops). What is the reasoning by Elon that paid advertising is fine for one of his companies, but not another? Would be interesting to hear the specific reasoning.
This is really obvious from a Marketing point of view.
Tesla has quickly established 'unaided recall' globally, highest 'brand value' among industrial companies, rapidly growing market share in most markets and nearly ubiquitous media coverage, plus... so advertising in any form is simply a waste of money. Remember, for those who do not know, advertising is, by definition, minimally targetable except in specialized cases such as billboards.
Starlink is largely unknown outside technically oriented audiences. Further one class of Starlink placements is on commercial airlines which benefit from wide awareness. Cellular backhaul and such things as the T-Mobile remote area coverage also benefit from very broad awareness, just as the practice in many countries of promoting Starlink for direct access in remote areas. Because Starlink is a mass access substitution product today it needs widespread recognition.
In marketing it is crucial that each choice is carefully considered and evaluated dispassionately. Every Musk company does that. In each case they understand who the buyers are, who the influencers are and conduct their marketing to reach their crucial audience.
The mantra of the 21st century is Targeting, as it was in the 20th century for those who practiced what was then known as Direct Marketing, first by post, then telephone until 'autodialer' technology matured and destroyed all vestige of utility (except for Medicare supplements, credit card scams and Nigerian investment opportunities, of course). Since Google, then Baidu, perfected internet search and dwell time data, the world of targeting has never been the same. Now people who act as though they're interested in something suddenly find out all about it. Because of this approach, which I describe in absurd simplicity, any business which has a narrowly circumscribed market, as new cars, boats, houses etc, can be quite explicitly reached, usually without even noticing. Tesla's quite masterful at this, so much that most of us seem not even to think it happens at all. So, advertising for Tesla is definitively a waste of money.
Please remember that advertising only is sensible when the Total Addressable Market is essentially everyone within reach of the advertising. Think toothpaste, prepared foods, etc.
For auto manufacturers it si a waste of money, but nearly all of them have done it for their entire existence and now they have a huge interest group of marketing staff, ad agencies, dealers so they just don't know how to stop.
Just look at financial statements to see how wasteful that process is. The typical OEN spends between five and ten percent of sales on advertising (corporate, brand, model, region, dealer, print, TV, Cable and on and on). You'll rarely see all that in single number because it is in many different accounting categories, right down to dealer level.
The people who say Tesla should advertise seem never to actually understand how that industry works. The people who do understand how targeting works, how social media works, how to generate 'word of mouth' understand how it is that actual prospects to buy a Tesla product invariably know enough to do it, and if they don't there's usually a teenager or younger child to explain it for them. [Irrelevant Note: at a recent family gathering in Rio de Janeiro I overheard one a discussing his plan to buy a new car. His seven year old daughter said, "Dad, you must buy a Tesla, they have all the best games". I was not a participant and never, ever, had discussed tesla or any car with the main question. Tesla si not yet sold in Brazil] The very fact that Tesla is an aspiration for younger people almost everywhere implies that Tesla is reaching people very well. It's only the older ones who think otherwise.
I understand that this subject has become an article of faith rather than fact. As such I also understand rational information will not alter preconceived ideas.
There is a topic in marketing called "mother-in-law research", rather unkindly. That happens when somebody says, e.g. my next door neighbor does not know about Tesla, You 'gotta' advertise'. A rational solution might be to show the next-door-neighbor your Tesla. That solution most of us have been praising for quite some time. Tesla, so idiotically not advertising/s , offers referral codes which astounding though it is, work! and cost very little.
Oddly enough the fewer Tesla populate an area the better that works. That is only the most obvious example of how adept Tesla can be. Then there's the old 'free Supercharging' ploy, which never fails especially now that everyone must pay.
But, that's irrelevant, "you must advertise!"/s
For those who are irritated by incessant repetition, I promise I'll quit, just as soon as people begin to study the subject before presenting they know of what they speak./s