I think the issue is one of 'looking the part.'
If you're looking to build a successful business then having the proper machines and looking professional is very important. I've lost count of the number of times I've had a customers (formerly someone else's customer) tell me about the poxy little machine the last guy had and how long it took him, and how wet it was, and how not clean it was when it finally dried.
One of the age old problems with this industry is that it appears and attractive proposition to those looking to invest as little as possible in an effort to make a quick buck.
Sorry, there's no room for ameteurs in my world. Get the proper equipment.

Simon