There probably aren't enough tourists to spend $1000 a day to cover the loss of the mass market. Plus they wouldn't cover the costs of all the touristy stuff such as the two huge water parks, the floating market, the two magnificent sheep farms (I know, how lucky are we?), the crocodile farm, Siam Kingdom of Ice, the big bee farm and not forgetting my absolute favourite...Flower Land.
It's calculated that tourism is worth a little below 20% of the Thai economy. But that almost certainly doesn't include all the tips/off fees etc you pay out and you pay out a lot. If I spend 10000 baht in one day (rarely but sometimes) then 4000 of that is on off fee and tips. Now I may be wrong but I don't think the beautiful Thai sex worker is filling out a tax return.
Also, tourism allows millions of Thais to earn an honest living in reasonable conditions and is for many a ladder to a level up. If that ladder is removed then the civil unrest we've seen in the past will pale in comparison to what could happen.