It's not for everyone, but there is a market for just about anything.
I recently finished a 160 light LUXOR ZD system for a client and he was thrilled, so there you go.
Also, just look at all those billable hours sitting down and programming the fixtures, setting up the groups, programming each transformer etc. etc. If you're not charging for all that time, you're a numbskull. If they don't want to pay you for that time, they're a numbskull (and too cheap for this system). And most of this can be done in the shop instead of in the field. Bonus!