If Apple was smart, they would have made an offer for Tesla when it was at 200. They could have offered about a 100B enterprise value, or between 500-600 share. I'm not necessarily advocating this, but just speaking hypothetically. We all know how good Tesla is, and if we were at the head of Apple, wouldn't we consider buying Tesla instead of developing our own competing platform? Also, while many shareholders may have been disappointed at such a "low ball" price, I'm sure many, perhaps even a majority, would have jumped at this possibility. (Ross Gerber for one; he tweets once a month that Apple should buy Tesla, and I'm sure he would be happy with 500. Not so much Cathy Wood or Ron Baron.)
The higher Tesla goes, the more expensive it gets for an outside buyer. But it also becomes more derisked. As is often in the market, companies usually pay premium (buy at the top), so this could also happen with Apple. But, personally, I think Apple is looking to develop its own platform rather than buy Tesla or someone else.
To be clear, my own target for Tesla is 3000-6000, and I would much rather no one buy them. But the point I'm making above is from the perspective of an outsider or competitor.
And there is the whole issue with Elon Musk. Would he remain CEO or not? That is perhaps the most thorniest issue. He would likely demand to be made CEO of Apple (or the combined company), which I think would actually be good. He could then bring Neuralink into Apple, and advance the next great frontier in computing:
desktops >> laptops >> smartphones >> wearables (watch, visor/glasses) >>
cyborg implants.
Transportation, personal computing, and renewable energy: the quest for a fantastic future! Let's get Apple and Tesla together and make a bunch of babies! Ha, ha.... just kidding. C'mon folks, lighten up!