EV incentives were never intended to be permanent and anyone following closely knows that they phased out for any given model after the sales of X units per model was met.
Tesly and others gamed the system by reworking models to restore the $7500 credit.
Last summer I used the credit to buy a basic Model 3 before the incentive ran out.
This past summer I traded up to a Long Range Model 3 when I learned that the incentive was back based on changes in where the manufacturing took place. The point being changes to a makers line up have extended the life of the program.

What is Tesla up to if the incentives end entirely?

The charging network, that's what. Just as gas cars require a vast number of gas stations, so do EVs require a network of charging sites. While there is competition from other providers, Tesla Supercharger sites dominate the landscape and guess what?

They can charge whatever they want per kWh. Lately I'm paying 49¢ on the road, twice what I pay to charge at home.

Can it go higher? Sure it can. So, Tesla doesn't even need to make cars any longer (but they will), they have a near monopoly on the charging infrastructure.

Fossil fuel interests don't have much in the game either way. Most of our power (nationwide) comes from natural gas, so they aren't hurting under EV adoption.

https://www.eia.gov/todayinenergy/images/2024.02.22/main.svg

I know some people are EV enthusiasts and are excited about them, and I know people seem to like Teslas, but that’s a bridge too far for me. I’d never stop thinking of Blowfeld every time I drove it. But different strokes. I hope it is a good vehicle for you.