Well, I wouldn't say there is a ton of footage, but it is growing. What I wished the companies would realize is that as we get older some of us want a bigger bike but we don't want a 24 or bigger. 22 is the perfect fit. Besides, it just makes sense to create life-long bmxers. That's why a few companies have started making 18-inch aftermarket product like BSD and United. I just wish they would see this continuity as we get older.
Thankfully we have S&M/Revenge saying they are in it for the long haul, and Faction Bike Co. makes an excellent frame/fork/wheel kit. And they're getting ready to start selling their rims separately which is good because you won't have to invest in a complete wheelset just to get going. Their F22 tire is the best available with 100+psi, and S&M is dropping a 22-inch version of the Mainline tire this summer.
And it just wouldn't be right not to mention Indust. These guys basically got it all going here in the US, along with Jason Webb making the first 22-inch frames and getting rims and tires produced. And I know that Shawn Shimkets played a role, just don't know all the details.
I personally think it will happen.