> However, every data we created is always highly coupled with the app in which it was created. The emails that I write are not coupled with any particular app

> However, every data we created is always highly coupled with the app in which it was created. The emails that I write are not coupled with any particular app. The HTML files that I write are not coupled with any particular app. The ogg vorbis files that I produce are not coupled with any particular app. The vCard files that [...] Really, that's always been a strategy of businesses trying to lock in their customers. But open formats with various interoperable implementations do exist and work just fine.