Uhhhh...if the team stealing signals has the CORRECT signals, then all the dummy signals in the world will not change things.
The only "possible" solution would be to use 12 different sets of signals for 12 different games. Or maybe 24 sets of signals for 24 different halves.
The bottom line is that you can address the problem in two ways. Yes, teams can improve their countermeasures. And, yes, the NCAA (and conferences) can toughen the penalties and enforcement.
I agree with you on the money thing, but I'd also say that college athletes have not been paid fairly for over 100 years. But the military-op sign-stealing is only a recent development. We can write rules to address the sign-stealing.