In FL it is required that you have 1000 hours of hands on training from a licensed individual. I try to let people that are really interested come over to work with my collection but I am always in the room watching what they are doing. For me it is worth it to properly train the next venomous keepers properly and not let them fall victim to the less educated keepers that make headlines.
Am I correct in thinking that MI is one of the states that has no regulations regarding venomous snakes? I think those states will be first to get them banned. The states with good permit systems in place will likely keep the hobby alive (although it will be small and stifled). In my opinion FL has a good model to follow. Required documented training, very well designed caging requirements, a preliminary/ annual inspection, and an affordable cost. If all states had a similar set of regulations this industry would last a lot longer. The good news is that you can bet that the federal gov't will never rule on a sub-culture this small so there will always be some states where you can keep venomous reptiles.
As far as vendors go- there are always going to be scumbags. I work at a Repticon show in South Carolina (where there are no regulations) as venomous staff and have refused to let people leave with a snake when I over heard one guy saying that he would use a bent coat hanger for a hook and another one asking his buddy to refer to a puff adder as a ball python so that his GF would not get mad. On the other hand, 95% of the folks there do their part in making sure buyers know what they are getting into and most buyers know their limits.
Don't be so cynical. This hobby has some years left in it.