[mzjs]

In my opinion, this wouldn't actually be convenient:

- Many of these (uber, amazon, Wikipedia, PayPal) have nothing in common. Yes, you can mix a bunch of different apps together into one. But how is one complex app better than many simple ones? - While social networks are basically the same in terms of functionality, the communities are different. If you mix together every social network, the community will suffer.

Also, I think people like having different apps for a couple reasons:

- Apps are modular, so you get to choose what you want. With one huge system, you get everything, whether you want it or not. - Apps are easy to conceptualize - "In x app, I do y." It's much harder to understand a giant system (for example, why so many people confuse gmail and google itself).