If I'm even thinking about an idea, I'll register all three. The cost is indistinguishable from zero. I wouldn't defensively buy from a broker or squatter, but

If I'm even thinking about an idea, I'll register all three. The cost is indistinguishable from zero. I wouldn't defensively buy from a broker or squatter, but for unregistered domains, I think it's a no-brainer to do it.