The Problem is not the money or the lack of high crafters, the problem is having to costantly worry about all the gears, if you level up 3-4 jobs (as 99% of the players) you will have incredible difficulties in keeping all your gears at a decent durability, this because you just can't go to a camp and do 3-4 levels without worrying about repairs. and this sucks.

Fine let's say you're a rank 50 thaumaturge for example, you'd need a :

Lvl 50 goldsmith : rings,earrings,necklace,scpters... = Time to get item repaired + money to get it repaired...
Lvl 50 Weaver/Leatherworker : armor pieces = Time + Money as above...

That's 3 craft at 50, and i've put it in the easiest way i can think about ( every other job needs another different craft for its weapon )

This thing itself isnt scary, the fact that this process is ENDLESS scares me the most.