Maybe they think you're using too many question marks.
Seriously though, if you only have Captiate 6.0 at the moment, the only way you'll get updated to a version of Captivate that is compatible with Windows 8 is to either join the subscription program, or join Adobe's software assurance program (which is similar to subscription) or upgrade to Captivate 7.
The fact that you have Captivate 6.0 and it's not compatible with Win8 isn't going to mean that Adobe will take pity on you and just give you 6.1 or 7.0 to keep you happy.
There are no more ELS suites now to upgrade to from now on.