This whole thing has gotten way off-topic, so why not pile on?
Glenn Campbell with The Misunderstood and Juicy Lucy, Steve Howe with Yes, David Gilmour with Floyd, David Lindley, Al Perkins, Greg Leisz, David Bromberg, and many more did commercial lap steel (acoustic or electric) work over a period of decades. Yes, except for the obvious Dobro in bluegrass context, it was somewhat under the radar, but very much a part of even the long-haul rock and roll context. Not to mention the obvious pedal steel connections.
That feel is present in lots of other stuff, whether you want to call it "lap steel" or not. I think we get a little ridiculous sometimes, distinguishing between Ry Cooder and Sonny Landreth, playing whatever they play, and these others. And yes, lots of music stores have, and have had, lap steels for a long time. Even new ones now. For a while, there was no need for new ones, they were largely sleeping dogs for a while, but always there, under the radar. A lot of the best music has always been under the radar of the ridiculous music biz PR machine, a fact often even acknowledged by the music biz PR machine. IMHO, of course.
For that matter, I can't buy a new pedal steel either.
Good heavens, why not? Plenty of them out there. This is nothing like 1972, when it really wasn't that easy to chase one down, unless you were living in the right place. They were never exactly the kind of thing you go down to the local mom and pop music store an take a bunch for a ride - again, a specialty instrument.
Back to the topic...
Lots of younger musicians hit me up for info on steel guitar - pedal, lap, whatever. It will probably always be a specialty instrument - maybe never the flavour du jour - but always there, under the radar. I wouldn't worry about it. It's about the sounds it makes - not how pretty the flamed maple is, not how rare the custom color is, not about ID'ing with your favorite rock star, and not how you look when you pose with pouted mouth or dance across the stage with it. It requires a certain level of musical maturity to appreciate. But I and lots of other older steel players play with mostly 20-somethings these days - people young enough to be my kids. These younger musicians aren't likely to go to any steel guitar shows, but they're into it. Funny how little this has changed in 35 years when guys like Sneaky Pete and Red Rhodes were playing with those "rock and roll guys".
BTW - I get kinda tired of hearing how lazy and useless the "younger generation" is. Seems I heard the same thing about me 35 years ago. They're about the same as any generation, except there are a lot more of them, they get ridiculously micromanaged with skads of rules and busywork from age 3, and they have a lot of useless junk foisted on them to clear out of their heads, in order to do anything. But, as always, they do and will figure it out as time goes on. Again, IMHO.