As said it is to make it a PITA for buyers. The intent was to make it harder for first time buyers to buy a gun.
Example? Guy decides he wants to buy a handgun. Looks online, goes into gun store he is by. They have range, he tries it, makes offer, accepted. BUT he has to get a "purchase permit" in many states. THEN go thru waiting period.
So he has to go back to that store over a week later. So he says "heck with it"
I have seen folks want to buy gun, when told PITA to do it....
My FFL was 50 miles away. IF my NICS had been delayed for any reason I would have had to make another trip. He was NOT allowed to run NICS before I made trip....
Leadcouncil said it better.... I just read first post then hit reply.