It is not always the dealer.
There is a local dealer here (many years ago) that once sold a V65 Magna to a first time rider, they tried everything to get him to accept some instruction before he ever got on his new bike. But the young mans pride could not let him admit that he did not know all that there is to know. He made it about 100 feet out of the lot before the front wheel came high off the ground and he went thru a cyclone fence. He lived but it was not pretty.
A local Harley dealer offers a free MFS course with a purchase and before pickup. They can offer but there is no way to require it.
There are some (not all) dealers that try to do the right thing. As you say dollars are the bottom line, even the good dealer knows that if he refuses to sell you the bike that you will just head down the street to the next dealer and buy it, and the only thing that will have changed is that a different dealer got the money. Buy making the sale he can at least try to get you to understand the need for training.
I know I was surprised at how many riders do not have a MC endorsement or even a learners permit. They just ride with no license. They refuse to go thru the process because learners are required to wear a helmet, once you get your license the helmet requirement is gone. Helmets are for geeks......not men......