Look at your graph again. The usage dropped from 30% to 10% from 2010-2015, and 10% to 5% from 2015 to 2020. It doesn't seem clear that the staff had significantly raised the value of the product before the deal, and there is at least an argument to be made that the huge influx of cash stemmed the bleeding.

While I won't claim the leadership has been truly outstanding, I think the extreme criticism of their salary is unwarranted.