In true point-counterpoint fashion between friendly arguers, I'll retort:
The LCP and LCR are really targeted at markets Glock isn't paying much attention to: really small and deep personal, civilian CCW weapons. I look at them differently because Glock doesn't really have anything in their product line like them. Glock doesn't do revolvers and even though they could easily engineer an ultracompact CCW gun, they haven't done it yet, for reasons only they know. I give Ruger a lot of credit for picking out that niche and really blowing it wide open with the LCR and LCP, even though I still can't buy an LCP where I live (sadly). And let's give credit where credit is due: Kel-Tec really got the ultracompact "mouse gun" ball rolling, and then Ruger jumped in with both feet and a backup revolver

.
On the rifle side, the SR-556 took Ruger quite a while to bring to a crowded market and when it finally got there, it was a piston-operated gun that can't be easily converted to .22LR for plinking, and late to the party - but maybe the late arrival was the best-dressed and among the best shooting of the bunch. I can't look at it and say Ruger was rushing to bring that gun to market - after all, it was a fairly major cultural shift for them. I think they took their sweet time and got it right.
That leaves the SR9, SR9c and SR40. The SR9 had great initial reviews and fanfare and then suffered a recall and some other teething pains after its rollout. I bought one anyway

and I'm glad I did. I think Ruger was hoping the SR9 was going to make more of a splash in the Law Enforcement market versus the Springfields, S&W M&Ps, Glocks, and Sigs, but that first recall and subsequent questions about barrel peening threw some cold water on that ambition.
Just reading the posts here at Rugerforum you can tell that the SR9's early troubles cast a bit of a shadow over the SR9c in a lot of people's minds. I think it's equally possible that those difficulties led Ruger to keep some of their older models around longer than they would have otherwise.
So we're the Siskel and Ebert of Ruger's marketing strategy, I guess.