I thought I'd pop back in and add some more thoughts to the original question of why merchants continue to use MAT poses...

First, there's "interia": many merchants have been using MAT poses for years, they don't receive any complaints from customers, and they think their sales are decent. They tend to think things like "This is this the way I've been doing it for years, so why do I need to change?" or "I don't want to change the files in case this upsets customers and I lose sales." (Yes, there's little difference between a MAT pose and material collection file, but some merchants may be nervous like this.)

Second, how many top sellers will see this thread and change their ways? "Well, if a few people are complaining in the forum, then they must know better than someone who's been Vendor of the Month and Vendor of the Year for the past 5 years". Sorry for the sarcasm.
Seriously, though, I bet you could look at any of the top 25 best selling products and all of them would have MAT poses. So why haven't the top merchants switched to material collection files?
I'm sure this is because of point #1: they've been using MAT poses, and no one has complained, their products sell great, so why should they change their workflow?

In turn, if other merchants see that top sellers don't use material collection files, and their products are the best-selling on the site, why should they use material collection files? Sure, this is faulty logic since it takes more than MAT poses/ material collection files to make a great product, but still.

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