I guess now that they're no longer the only beneficiary of their network, they aren't as invested in its success. They may also believe that the federal government, and possibly states as well, will offer incentives for them to continue building it out. Everyone knows that their network is more reliable than other chargers, and if the EV charging infrastructure doesn't improve it will severely hamper EV sales. If CA or the feds want their EV adoption goals to be feasible, they will need to subsidize chargers, and especially the supercharger network.

Tesla no longer effectively donating EV charging infrastructure to competitors.

Except even that isn't true, they still are sharing their EV charging infrastructure with all competitors and are still building it out just at a slower pace with more focus on charger uptime. And a pace which is still faster than all other US EV competitors.

More discussion from yesterday:

Tesla conducting more layoffs, including entire Supercharger team (259 points, 611 comments)

https://news.ycombinator.com/item?id=40209382