I make my own bleeping apps! 
I am by no means as concerned with big-name services shady business pracitices as some people on here seem to be, but i’m also not sure we need quite all of them in our lives either.
If something disruptive comes around that is more inclusive to alternative platforms, i think it is our duty to be there. If i come across an open API, and it is useful to me, i consider making it an app.
Similarly, i don’t evangelize SFOS to friends and colleagues, but if it comes up in conversation, or (more likely) people have issues with their Android stuff, i’ll show why i am perfectly content with SFOS.