This is the mindset of most people coming into this industry, but don't have a clue about business. Like you said, since this OP opened the can of worms, might as well use him as our subject.
Reading over his profile, he is used to making 18" x 24" signs and decals. He pushes buttons and has some machines to do his work. He has no idea of large projects, so he sees dollar signs, when he thinks he's gonna make a grand extra. He has no insurance figured in, no slop factor, nothing in case anything goes wrong and he's never done this sorta thing before, so he bashes people who are giving him years of experience to help him, but he calls them names. He knows better and shuns experience and know-how. Again, he's never done this, but knows he's only gonna have a few hours in it. Did he allow for packing the truck, the ladders, does he have all the necessary tools, did he obtain a permit, does he have adequate insurance and liability for this kinda work ?? If while up there, the lamps are not lighting, does he know how to test the ballasts or the sockets ?? Does he know how to wire a new one in ?? Does he even have the required lamps and ballasts on the truck or is he gonna just think again, well, I'm making an extra grand, I can afford to go get them and put them in...... Oops, does he know how ??
Today's sign people, coming in...... have little to no business sense and don't know how to prepare for the unknowns, which in the case of like this OP, seems to be just about everything is an unknown to him.
I wish him luck, but with an attitude like his..... he's his own worst enemy. This is almost like the guy wanting to buy printers and has no idea of what he's doing in another thread. This is just getting to be the norm in this place. There's like no one who participates with any knowledge or wants to participate and the people participating is like the blind leading the blind.