Not marketing. Definitely not marketing. I spent $50 on marketing and it got me about $3k worth of business on the first two weeks. Just some flyers and self-printed business cards.
Ok, so you had 1 subcontractor (yourself). I don't know Cherry's deal, but doesn't seem unreasonable to say that they were shooting for a 1,000. Or 10,000. In geographically dispersed areas. You can see how it can start adding up.
I never said I was the only one washing cars. I had sub-contractors that I paid on a per-car basis. Scaling an on-site car wash to 1,000 or 10,000 sub contractors is not going to happen. And here is why: Too many problems will arise. Insurance claims, theft, etc. will quickly make them raise the price to keep a healthy profit margin. Problem is, once you pass a certain price point, people will simply not buy. Thus you end up scaling for nothing. On site car washing is one of those businesses that just doesn't scale favorably.
There have been onsite carwashers for some years now, decades even. If someone could see themselves using Cherry, they would probably already be aware of this.