Im not a coder but what
I THINK is because a lot of them ask for TOO much for the minimal pay......Never satisfied.......and cant explain well
Im not a coder

but i can do a thing or two. and i know im NEVER doing any custom pay....
and also the fact that a lot makes you do the work and never pays.....no one has time to waiste....and coders does as much work as any person in an office job
my 2 cents