>I don't know where this fascination with getting everyone to download your app comes from.

So they could do exactly what they are doing on the web and may be even more but with Native code so it feels much faster.

I got to the point and wonder why cant all the tracking companies and ad network just all share and use the same library.

But on Web page bloat. Let's not forget Apps are insanely large as well. 300 - 700MB for Banking, Traveling or other Shopping App. Even if you cut 100MB on L10n they are still large just because of again tracking and other things.