A thought on history
The original Gun Control Act made it very easy to get an FFL license; $10 a year fee, as I recall, no requirement that the applicant have premises in an area zoned for business, etc. The reasoning was simple: private sellers don't have to keep records of sales, which FFLs, and so letting lots of people have FFLs meant lots of sales "on the record." A person simply claimed a room in his house as his business premises, could buy interstate, kept records of sales, with no great burden. As I recall, at the peak there were about 200,000 FFLs.
Then under Clinton, Violence Policy Center staged a media pitch that there were so many FFLs out there, more gun dealers than gas stations. And a private group, National Association of Stocking Gun Dealers, or something like that, attacked the in-home FFLs, seeing them as competition. The result were amendments making it harder to get an FFL. Your premises had to be in area zone for business, had to have certain security, and the fees were increased. The result was that the number of FFLs shrank, I believe to about 25% of what they had been.
Now the pitch is... "there are people who make private sales, and they don't have to keep records, that's terrible and ought to be stopped."
As the saying goes, make up your mind.... unless of course the only objective is to make acquiring guns as difficult as possible. Drive 3/4 of the FFLs out of business, and then complain that non-FFLs shouldn't be allowed to transfer guns.