Think about it. When was the last time there was a thread or comment along the lines of "My genuine VCDS cable won't work!", whereas there are often posts along the lines of "I bought a VCDS / Vag Com and I can't get the drivers / software to work", or "My cheap cable doesn't connect to my car and isn't recognised by my computer."
If it costs £250 for a cable and software which works out of the box every single time you use it, then it's worth £250. If you have to start disabling internet connections, loading only the drivers which come on a cd, and using the old version of the program which is all you can use, just to steal something which is more expensive, then you really shouldn't expect support from a forum of enthusiasts.
That's my view anyway.