That’s not how pricing works. They already have the price they think makes them the most money. Raising prices means losing customers to competition, netting a loss.

So they would just lose 1000 customers and not raise the price because that would mean an even higher loss.

It’s different, of course when including that all ISPs would be hit with this. One can only speculate what will happen. All those pirates will want alternative ISPs, probably paying extra for privacy. The rest will stay in a dying market where competition for the remaining customers would be fierce, probably with lower prices.