While "our" business helps, the vast majority of most LFS business is "daddy, I want a fish tank" and "hi, here to pick up fish for Dr. Bobs office, they killed them all again this week". Of course there are exceptions. However, none of them can compete dollar for dollar to online, let alone basement vendors. The point is that they don't really need to.
I have two LFS near me.
One has a fleet of at least 4 branded vehicles they use to go out and do their rounds of large builds and scheduled maintenance for all the “Dr Bobs”. The livestock seems more an elaborate marketing effort to sell the maintenance. Basement vendors aren’t going to kill this business.
The other has a huge range of high end livestock and a healthy online presence. They sell a wide selection of quarantined fish and first item in their current coral WYSIWYG is over $2000… they’re offering products and services your average basement vendor isn’t.
Well, and there’s also a Petco.
I’m skeptical basement vendors are a fundamental threat to either of these LFS. Folks buying discount frags out of a garage aren’t dropping 4 figures on a few Acan polyps, and randoms with basement operations aren’t out there setting up and maintaining large aquariums.