Agree...I don't necessarily understand the DIY argument. It's apples vs. oranges.
There are tons of things out there that you can build yourself for less, but that's exactly the point. You have to do it yourself. Some people don't have the time / don't enjoy / don't know how / can't DIY. A company does research / design (even if minimal), builds a product, provides a warranty, sets up dealers where you can audition, has to pay salaries, etc. All that has to be paid for somehow. Don't like it? Fine, then DIY or buy from an ID company. And Usher is not the only company that has their drivers available...
Heck, I can make a pretty darn good steak at home if I wanted, but sometimes I go to a restaurant too.
And don't get the impression I'm against DIY. Love what people are doing with their subs and am would love to build a Linkwitz Orion.