It's going to take a while, but our toolkits need sharpening as well, so I'm not expecting a non-trivial web game to emerge very soon. But the platform is growing in the right direction.
You got me interested, what kind of a game are you working on? Sounds like my kind of a game.
You could say it's a "dwarffortress" except the details are totally different. For example, chopping down trees will not kill dwarves, but it does in my game. Production and logistics in my game is a lot smarter to prevent players from worrying about managing food production so that they can worry about more interesting things.
It's a very ambitious project for sure, and I am not expecting to complete the game until many decade latter. I am in this project at about 4 Kloc of code, yet a completed RTS game is about 40 Kloc. Mine will be bigger than this.
The main challenge in doing this project is whether or not I have the ability to slog it out for several decades and the ability to resist temptation to rewrite the whole codebase at once.
Unless your game requires or will requires heavy duty CPU and lot of RAM. In which case, you would need to wait several generation before a phone can run your game.
Think of FPS shooters of today, except the resource spending is inverted from the art department to the software side. Instead of racing for the biggest and greatest graphic, they aim for the most complex and detailed world as possible. Instead of gameplay being only 40 hours long game, it is measured in years.
That is the kind of game I am working on.