There are 3 closely related problems:-
- Building, selling and supporting completive EVs. (avoiding paying for regulatory credits)
- Making a reasonable margin on EVs.. while doing 1. above.
- Having sufficient Battery Pack volumes to get to scale which makes 1. & 2. above easier.
Some ideal of Tesla's plans post Battery Day can be cleaned from the construction progress at Shanghai, Berlin and Texas.
Compare that to Shanghai phase 1... the level of ambition has stepped up as Battery Pack supply is a solved problem....
Now compare some legacy OEMs to Tesla, if their ambition is limited to avoiding paying regulatory credits, and avoiding a risk all in bet on EVs,,,, they have a conservative, modest, low volume plan, and for them Battery Pack supply is far from a solved problem...
Already they are making some compromises and adjusting their plans as they can't get cells and packs in the volumes they ideally would like. Suppliers are probably telling them better prices are possible with firm orders for higher volumes, but to date their EVs don't always sell well and the dealerships are often reluctant to sell them...
Legacy OEMs will find it easer to make a margin in EVs, if they go "all in" and fully commit to volume production.
Soon there will be no choice as ICE will become increasingly hard to sell.
As you say competing with Tesla on cost, range, performance and software will be daunting.. competing with Tesla on production volumes, speed of ramp, and innovation close to impossible.
In some ways Battery Day looks like the end product of 5-10 years hard work, Tesla has a comprehensive plan for all aspects including scaling production volumes, Tesla will have plenty of headroom to make good margins and slowly cut prices.
If I had sum up my expectations for Battery Day up in one word, that word is "Comprehensive".