To be honest, “If it’s not giving me what I wanted out of this transaction, then it’s bad.” is a heuristic that works well for most things we buy. If I buy candy and it doesn't taste good, it's bad. If I buy a car and it breaks down, it's bad.
I think the real problem is that some people see games as a product and others see it as an art piece. Some games fail at being either, some succeed at both.