They clarified this before already but FYI there are no “License Tiers.” (EDIT: Correction - the pricing tiers do not grant different licenses). There are pricing tiers but only one standard license for all FAB products. I.e., If you are a large company you pay more but you do not get a ‘different’ license.
Does it make sense? Not at all. It’s like being charged $30 for coffee instead of $2 based on how nicely you’re dressed. Looks expensive? Time to upcharge you. What you get is exactly the same, you just have to pay more because you are you.
Most of the time tiered licenses come with some additional needs for businesses (e.g., indemnification, larger permitted distribution volumes, etc. - which is what justifies businesses paying more for an extended license; this is how it worked on Artstation already before FAB and is why most places have a business license that has separate usage rights/terms than a persona license).
But in this case it really is just a discriminatory pricing scheme and you don’t get anything more for the extra cost you pay.