The problem with the so-called open web, is that it's not open when my web apps are closed-source, live in the cloud and are owned by such-and-such corporation,

The problem with the so-called open web, is that it's not open when my web apps are closed-source, live in the cloud and are owned by such-and-such corporation, which can terminate my account and delete my data at will. When I install an app on my phone, I get a much stronger sense of ownership, even if the license says that the app is still owned by its respective authors. Even better if it is open source - I get the strongest sense of ownership and control. Using web apps takes away all my power in exchange for some convenience and (sometimes) the advantage of having access to large human networks. Most of the time that's a bad trade-off.