I have used Hubitat to control lighting, shades, and locks in my home since 2018. There is no reliance on outside services or an internet connection. If the company ceases to exist my device will continue to work at least as good as it currently works today. However, there are many third party drivers written so it is conceivable development could even continue.
You CAN interface with other outside services if that's your jam, but at that point relying on Hubitat continuing to exist is no different than relying on those other services to exist.
You CAN interface with other outside services if that's your jam, but at that point relying on Hubitat continuing to exist is no different than relying on those other services to exist.