What you view as a problem I view as a likely strength. Waiting for demand to build and determine it is really there is important for any company.
My frustrations with Glock have nothing to do with being slow to adapt to market changes. It is being slow to respond to legitimate user criticism. Like Gen4 reliability issues, mushy triggers, and minute of pie-plate accuracy. Those issues seemed to be exacerbated by rolling engineering changes in addition to the stupid addition of finger grooves beginning in Gen3.
Pretty much all of those issues were resolved in Gen5, it only took just under 20-years.
Comparatively speaking the rollout of the G42/43/48/etc has happened lightning quick.
In the time it took Glock to roll out the Gen5, several whole product lines came and went from other makers, like Smith and Wesson, Walther, and Sig. Non-interchange of parts has resulted in those lines become veritable orphans. Anyone tried finding a M&P9 1.0 barrel lately? They're all discontinued. How about a Sig P250 caliber interchange kit? How about parts for the Walther PPX or a PPS Gen1 with a paddle mag release?
One could argue the Hudson H9 was innovative for its recoil spring mechanism. Parts though? Shit there are people who bought their guns and don't even have the gun anymore.
Meanwhile, back in the jungle - you can get all the parts for the not very innovative 1911, Browning Hi-Power, CZ75, Glock (pick your flavor), HK USP, and the Beretta 92-series. This speaks to the durability, reliability, and engineering of those designs. The youngest of those designs, the USP will be 30 in just a couple of years. We may have newer designs, but until they have 20+ years of continuous use, I'm unlikely to view them as well vetted and established models.
Thus for me, a companies reputation has far less to do with innovation and far more to do with longevity. But not just longevity (or like Colt would be the best brand ever). It's consistent production of quality products that makes the company's reputation to me.