Its not Intel's fault games are GPU-bound 99% of the time.When 3 or 4 year old CPUs perform close to the latest ones I would say intel are sitting on their backsides.
Compare a 3 or 4 year GPU to a Pascal Titan for example and it is a total non contest.
A GTX 680 v a Pascal Titan is such a mismatch not even a wrestling promoter could get away with it.
Find games where CPU limitations matter and which gen CPU you have certainly matters.
Plus, again, Intel are well ahead of everybody here. And with how CPU's work, they can't just keep increasing core counts and whatnot without significant drawbacks. CPU's have hit a very heavy wall of diminishing returns and Intel can't simply magic their way out of that. They certainly do their best, or else they wouldn't need to spend 10% of what they do.