People don't want them because they don't say "Glock"
They aren't in rap songs, TV show references, or gun rags nearly as often as their competators.
BTW - If more people would purchase, the price of mags would go down. ANY quality pistol with a very limited market share has expensive mags.
I don't own one because I own a P99, which I feel is the superior gun. The old paddle style mag catch is one of the reasons I love it so much. I feel like they caved in to peer pressure by switching back to a generic button. Walthers marketing department probably thinks it will help them sell more guns to the Xenophobic mass that are steryotypical gun owners... Bad move IMO. Sometimes being different is a good thing.
I agree to an extent I bought a PPQ M1 (paddle mag release) during the special run they did. Man it sold out quick. But there are tons of people for a variety of reasons want only a button mag release. So maybe it was a good marketing decision. Then again the special run selling out quick proves there are still people that want the paddle release also.