I agree with what has been said here but I also think that part of the issue is the lack of tutorials/resources made specifically for mesh CLOTHING.
I've seen plenty of tutorials that start out with a furniture sculpt or accessory sculpt but very few that show how to make a basic clothing sculpt (such as a shirt, jacket or a pair of pants) that is compatible with SL. I'm sure there are resources available out there but finding them is a different story. Most of these things don't really go into detail when it comes to making the item itself (which I can also understand because then there's the risk of the creator "copying" the design) or are outdated.
Even still, I know plenty of people who would like to learn how to make mesh clothing but are unsure where to start, especially when it comes to a program such as Blender (which is known for having a rather steep learning curve).
Hopefully, things will change as more resources become available.