That's not true, INSTEON is not a cloud-based product, nor is Z-Wave or ZigBee. Once you buy them, you own them and can use them, regardless of what happens in the market. If you want your computer to be the controller for these protocols, take a look at CastleOS or HomeSeer.
Also, INSTEON has actually been selling digital smart home equipment longer than any of the others you are looking at, and Z-Wave and ZigBee are standards (like WiFi, LTE, etc.), so they aren't going anywhere. While INSTEON isn't registered with an international standards organization, the protocol is an open standard that anyone can use in hardware or software.
Edit: the INSTEON hub is cloud based, but it's also designed to run without the cloud with software like CastleOS and HomeSeer. So, internal hub software = cloud, external hub software = no cloud. It effectively allows customers to upgrade to more advanced software when ready/needed. This is the only cloud product INSTEON sells, and again, it's an option, not a requirement.