Not sure you understand that Cocoon was a service, and C2 is software.
Construct 2 isn't going anywhere, it's just not getting new features, and soon to be no longer sold with new licenses. Bug repairs will continue for the foreseeable future. There's no reason to think that they would not keep it in working order as they need to preserve their reputation, and the fact that those type of issues will be fewer, and fewer as time goes by. Services by third parties like Google, and Cocoon, going away are the things we have to worry about.