While that may be the case, the point you were answering to was talking about how multiboxers pay for Kotick's new yacht. Let's do some basic arithmetic shall we.
Assuming 3k MULTIBOXERS, with 5 accounts each, we get 3,000x5 = 15,000 accounts
15,000 accounts each paying 13 euros a month = 195,000 per month. 195k x 12 months = 2,340,000 euroes, or, just under 2.5 million.
Now that we know how much a low-ball estimate (based on a discord server) of Multiboxers is worth to Blizzard in a year's time, let's look at prices of yachts.
Taking prices from
https://www.godownsize.com/average-yacht-prices/, a 40-foot yacht (standard size of a yacht) can cost around 895,000. 5 months worth of Multiboxers sub fees. Moving up the ranks of yachts, we see the next category, 50-foot yachts, coming in at 2,000,000 dollars, 1,150,000 dollars, and 700,000 dollars, depending on model and characteristics.
Lastly, let's not forget Euroes are stronger than Dollars, (1 euro = 1.17 dollars as of 10/08/2020).
You sure Multiboxers alone can't pay for a yacht?