-
I don't think the boat cost is the major barrier to entry.
How is some kid, who probably has a bike already, going to get their new yacht down to the nearest lake? Who, as a kid, even thought about sailing as a sport? Surely no kid goes "hey dad, can you buy me a boat?". It's people with boats taking their kids out, right?
EDIT: Elliot Hanson literally saying he got into sailing during family holidays to Anglesea.
You can buy a new sailing dinghy for less than most mid-level road bikes, and you can find second-hand dinghies for less than an Islabike.