Intel is ruining Intel.

Proton is still a for-profit company. However, there is now the non-profit Proton Foundation that is the largest shareholder of the Proton company (not necessarily majority shareholder).

Plus, non-profits are not guaranteed to be positive. See OpenAI for example.

Edit: Grammar

The foundation is the largest shareholder, but Proton has not specified whether it controls a majority.

But T-Mobile is still offering the service, so it is not the lifetime of that either.