This lines up very well with my recollection of the state of things circa 2011 when I evaluated the options for cross-platform push notifications and ended up r

This lines up very well with my recollection of the state of things circa 2011 when I evaluated the options for cross-platform push notifications and ended up recommending UA. I actually really _wanted_ to build the system in-house, because it seemed interesting, but I couldn't justify our tiny startup spending all that time that would be better spent on features our clients were asking for. 3) and 5) in particular were significant hurdles -- allowing UA to handle the API and TOS differences between Apple and Google was a major benefit. It wasn't just a matter of not wanting to implement it ourselves, but the risk of implementing it incorrectly and getting banned from the service.