I'm not really sure for how long we will have multiple implementations. And we won't have for sure any new implementation, we are stuck with the 3 we have and can only hope the 2 non chrome ones will survive.
That's exactly what people said about IE over 20 years ago. History has proven this reasoning untrue. Web isn't going anywhere. If there's an opportunity to build something 10x better than Chrome, it'll be shipped.
> If there's an opportunity to build something 10x better than Chrome, it'll be shipped.
There won’t be. Since IE6 the standards have grown to inhuman proportions, and implementing a new browser engine is even more difficult than it was then.
I'm sure with enough dedicated and enthusiastic people something better than Chrome can be implemented. Though will it survive at all is another question. Chrome has an effective stranglehold on the market, so for anything else to succeed it will take political will rather than development effort.