Earlier quoted context omitted.
it's worse than that - those locks are bluetooth-based, so they don't care about the cloud. What happened is that they are disabling the app, so it is no longer usable.
Apps require constant maintenance. If you just leave an app in Play Store or App Store and don’t touch it for a while, in couple of years it will be gone. Compliance requirements, obsolete APIs, forceful upgrades by the Apple/Google all see to that. That means you need to keep the app project updated and all dependencies in reasonable form. It’s not outlandish if you are a big company but as someone who oversaw the d…
It's that they just don't want to. They're greedy as hell, and they don't care about you.
Even if it would be too much work at one point, e.g. if Apple would finally update their Bluetooth stack more often then every 10 years, and the API completely changes. Why not just open source the whole app, or at least their interface so independent developers could develop something so not all of their products need to go into the waste? Because even in this hypothetical scenario, one thing holds true: They're greedy and they don't care about you.