It's more than preference, it's marketing and getting a piece of the tupperware gun pie.
In a world where we have the perfection of Glock, why in the world would anyone settle for something 'like' a Glock.
There are several gun platforms that are "better" in terms of preferences. If you like a better stock trigger, sights and ergos that is. Then in terms of large frame Glocks..... there was the whole FTRB issue. Naturally, they got "perfection" down after a few upgrades lol. Per usual.