"It's not just that scientists don't want to move their butts, although that's undoubtedly part of it. It's also that they can't. In today's university funding system, you need grants (well, maybe you don't truly need them once you have tenure, but they're very nice to have).
So who decides which people get the grants? It's their peers, who are all working on exactly the same things that everybody is working on. And if you submit a proposal that says "I'm going to go off and work on this crazy idea, and maybe there's a one in a thousand chance that I'll discover some of the secrets of the universe, and a 99.9% chance that I'll come up with bubkes," you get turned down.
But if a thousand really smart people did this, maybe we'd actually have a chance of making some progress. (Assuming they really did have promising crazy ideas, and weren't abusing the system. Of course, what would actually happen is that the new system would be abused and we wouldn't be any better off than we are now.)
So the only advice I have is that more physicists need to not worry about grants, and go hide in their attics and work on new and crazy theories, the way Andrew Wiles worked on Fermat's Last Theorem."
(new comment right below)
"Let me make an addendum to my previous comment, that I was too modest to put into it. This is roughly how I discovered the quantum factoring algorithm. I didn't tell anybody I was working on it until I had figured it out. And although it didn't take years of solitary toil in my attic (the way that Fermat's Last Theorem did), I thought about it on and off for maybe a year, and worked on it moderately hard for a month or two when I saw that it actually might work.
So, people, go hide in your attics!"