I'm seeing an opposite trend. Boats are so cheap. Many of the kids that sailed when they were young, still do around here.
We bought our son a sail-away 26'er, for a dollar last fall(yeah it needs work...). He's looking forward to do a little coastal cruising when he gets home from school, mid summer. He has a friend with another 'dollar' boat (his dad paid some money, but it's only worth a dollar, trust me), that will join him. Those boats will be packed with kids that love to sail and be out on the water.
I can't imagine getting involved in sailing boats like that when I was his age. No way! The first boat I bought as an adult, was a canoe(275 bucks, I remember).
We've got him on the waiting list for a mooring(there's waiting lists in all harbors around here). Once he gets that, he can keep that boat for about 1,000 a year to haul store, launch and moor.
Not a bad price compared to many recreations.
Our daughter too, still loves to sail and comes home from NYC (where she works), to see us, and to go sailing(and she brings friends to sail). She's making real money and will probably be able to afford more than a dollar boat when she decides to come back to Maine (and she will, you just know your kids).