Yes, that's why it's clever. The cumulative effect stacks up as they charge for ...

Yes, that's why it's clever.

The cumulative effect stacks up as they charge for every install & re-install of the app. That's the subtle shift of per install v. per user.

If the user has to reinstall the game due to the bug, the developer will have to cough up the fee.

If they have to reinstall because of hard-drive space hijinks, then the dev coughs up the fee.

If they get a new computer or a new device and install the game again...