[ken]

Yes, perhaps I was too subtle but the point of my comment was that (from what I have heard) virtually all small B&M businesses evade taxes when they're starting out.

I don't think it's coincidence that all the cashless businesses I've seen are for higher-end (and presumably higher-margin) products. Customers buying a $15 sandwich don't care about cash transactions because the difference between $15 and $17 is meaningless to them. They never pay cash anyway.