In reply to bpmclimb:
We looked at putting a trad rack together a little while back and well, we couldn't afford it but then my partner and me spend entire summers cycling, hiking and climbing in other lands (we only work winters) so we don't have a lot of spare cash. The other thing was instruction. Because we sports climb we tend to get in with the sports climbers and boulderers which means trad instruction comes with a price tag.
A lot of people who sports climb at fairly high levels, freak out and drop down a number of levels when they start trad climbing because suddenly their life is dependent on their equipment and not some bolt in the rock that could be dodgy! Some people give it a go but quickly decide its not for them. They then have gear they don't want and probably can't sell because most people don't trust second hand gear.
I do think btw, any sports climber climbing abroad should carry the minimum trad gear for back up because some of those bolts are old and rusty.
I get what you are saying about moving outside but that works both ways. Up until recently I hadn't ever been on a climbing wall but I had spent years doing free solo on crags and later, after admiring the more adventurous acrobats, I moved on to sports.
I only progressed to indoors when I found myself in a place with no rock and I have to admit I found indoors much tougher than rock! Its a very individual thing. I have met people who have climbed indoors for years but never been on rock and the other way round.