I agree, this is not a good idea. And you would more than likely find yourself prewiring homes for another company to come in behind your back 2 years later and benefit from your hard work.

I have a few quotes that I live by:

"Don't work, just for the sake of working"
"I charge $75.00 per hour, $150.00 if you want to help."
"Quantity is NEVER better than quality"
"I'd rather have 10' too much wire, than 2' too short"

Once you open pandora's box you can never close it. Good Luck