Understood, but that's entirely opted into by everyone else. I don't see what else Google could possibly do to encourage competition. They already fund Firefox, and allow anyone to build - and change - based on Chromium. At what point do we wonder why competition isn't arising given all of that? It's not as though Microsoft couldn't do the R&D themselves if they wanted to. They've chosen to build on Chromium because there's not much value in the "power" you're citing. Certainly not compared to the cost of building Chromium.