Also i dont see a scenario in which miners would vote out their own business model.
Technically,
they can. Also, the Lightning Network is based on Proof of Stake. There is no mining inside LN. That means, it is technically possible to transform Bitcoin into Proof of Stake coin, and give users some choice. So, a "coin in a coin" scenario is possible here and now, it is just a matter of pushing things higher, and turning the on-chain consensus into that.