I am not in the wine industry but any middleman doesn't truly...

I am not in the wine industry but any middleman doesn't truly hold a 30% margin over most of their clients, except they are drug dealers.
If the buyers are small, sure you can hold 30%. if it's any family-owned restaurants/ bottle shops, their turnover is fast enough. The middleman won't mind doing a 10-15% margin. Because it's fast and quick money.

DW8 is aiming at the bread crumbs, which is fine. It can be a tech giant if it collects all the bread crumbs.