Agreed here. Example: Garmin Golf. Can help track your scores and all sorts of data. Can you export any of that data? NO. Which means you can't do your own analysis and you definitely can't switch to any other golf tracking software.
A while ago I used an app ... can't remember which one now ... but it allowed you to dump your data for no real reason that I could tell. But I appreciated that I could if I ever needed it. It also made me trust the app more.