I'm thinking that too...
Also, considering that an MD out of school has just as much debt as the OD (probably more so), why is it said to be harder for an OD to open a private practice than it is for the MD? This has always boggled my mind...
Also, when you think about it, those that work in commercial don't (or can't) offer many services, and their customer service is usually munder a certain threshold (not trying to offend any customer ODs here; just going by what I've heard). So, technically, if a doc in private practice goes out of his/her way to please the customer, wouldn't it be relatively easy for that person to build a loyal customer base, even with a walmart across the street?
Not to change the subject here, but I have proven this theory right with ebay; everyone says that ebay is too saturated, and that you can't make any money off it anymore. Well, when I was selling video Ipods last year, I didn't cut corners in customer service (3 different options to pay, 3 different options to ship, free shipping insurance, 30 day money back guarantee, 3 ways to contact me, etc...). Who would have thought that my products were consistently selling for $20-50 more than the competition...