Couple things you might have missed. Says contracts in place. They also are mining bitcoin for actual money. So your math is a bit fuzzy. Even if both end up a small amount at present, the acquisition adds another branch to this business and brings a ton to the table.
When you buy a company that includes people continuing on, you are paying for their expertise. They also have experience in uplisting. Gonna happen and I would guess soon.
Also, they will be paid in stock. Which means that the people who are going to hand over $10 mil in cash and contracts and expertise and an ongoing business, they just invested heavily in a stock called HMBL.
As for your innuendo, the selling company knows that you don't pick up $60mil worth of stock in a company with $120mil market cap in expectation of selling your shares. If they dumped, they might get $3mil if they were lucky. They are in it to win it.