Well, if you "buy" a company for R50mil (for example).
You pay R10mil for it and say to them that you will pay that other R40mil to them if they hit key performance markers over a 5 year or 10 year period.
You then make the other company buy their product through you at a reasonable price (at the time).
You then take that other R40 mil, call it a marketing budget and subsidize your product which competes with the other company and offer it retail for far lower than the reasonable price which was given to the other company (contracts and stuff).
You have now forced the other company to have a higher cost than what you offer as retail, so a lot of the other companies subscribers move across to you, which makes it very difficult for the other company to get anywhere close to their performance markers and they are paying you above retail price for the product which they still have to resell.
At the end of the period, you have the majority of their customer base, they haven't hit their performance markers, so you don't have to pay out anything more and you gain the company for only R10mil instead of the original R50mil.
It's would be a very clever tactic, but it's probably just all in my head. </conspiracy theory>