> Because building local first with web technologies is like infinity harder than building local first with native app toolkits.

You just have to write one for every client, no big deal, right? Just 2-5 (depending on if you have mobile clients and if you decide to support Linux too) times the effort.

You even say it yourself, you'll have to use Apple's sync and data solutions, and figure it out for Windows, Android and maybe Linux. Should be easy to sync data between the different storage and sync options...

Oh, and you have to figure out how to build, sign and update for all OSes too. Pay the Apple fee, the Microsoft whatever nonsense to not get your software flagged as malware on installation. It's around a million times easier to develop and deploy a web application, and that's why most developers and companies are defaulting to that, unless they have very good reasons.