I believe identity providers will become even more important in the future as a consequence and that there will be an arm race (hopefully) ending with most people providing them some kind of official id.

It might slow them down, but integration of the government into online accounts will have its own set of consequences. Some good, of course. But can chill free speech and become a huge liability for whoever collects and verifies the IDs. One hack (say of the government ID database) would spoil the whole system.