“A warehouse doesn’t count, it’s a retail store that does. Amazon et. al., hasn’t flaunted anything.”
That’s simply not true.
Look up Complete Auto Transit.
1. Does the seller have a physical presence?
Yes.
2. Is the tax fairly apportioned?
Probably.
3. Is the tax facially discriminatory?
Probably not.
4. Is the tax fairly related to services provided by the state?
If the warehouse catches on fire, the police and fire department will probably show up.
If you’ve got a warehouse in a state, you make a sale into that state, and that state has a sales tax, you best be collecting or they will lock the warehouse doors.