To some, $500 might be huge and to others, it's just something they could spare at some point. Bonuses is meant for everyone but can't be gotten by everyone. Gambling thrives on luck and lucky I what you would be go have reach the quota and qualifiers to be given a bonuses.
If the funds aren't spare cash or you don't have it, why chase after bonus rather than enjoying your bet and casino? It feels like a dumb thing to do and that's just me.
These quota raises aren't a way to make you lose but to compensate and as well appreciate your patronage. You could win and still be appreciated, same goes to when you lose in accordance to the casino's T&C.
When people see 500$ bonus they think first of all that 500$ bonus as a gift or present. And bonus is a good wey to attract attention. But it is necessary to play for these 500$ and only few person are able to withdraw 500$. It is necessary to remember that nobody will present you 500$.