Everyone's got a 1911?
So what? It didn't stop them from making an AR-15 clone, did it? (and pricing themselves out of the market, too)
What I think Ruger should do is design The Next 1911. Write down the things people love about 1911s: single action only, crisp trigger, thin, accurate, comfortable to shoot, etc.
Then, build a ground-up, MODERN gun that meets these specs at a fair price.
I have and like my 1911, but there are things about it that are definitely reminiscent of an old design. I can field strip mine without tools, but it takes about 4X longer than stripping a modern pistol. Having to worry about magazine reliability or reliability of certain ammo? That should also be a thing of the past.
If they built something very similar to the FNP 45, (double stack, full size service pistol, 45 ACP, 15 rounds) but made it a single stack (8 rounds) and with a narrower slide, they'd be on the right track.
Then, later, have a competitor to the Glock 36 (single stack compact 45) that doesn't pinch fingers.
Ruger needs to get back to innovating and stop making "Me too!" guns.