This is general pattern and it’s a good thing. More often than not founder is much better bet to execute on vision and longer term success. However, recently it has been shown that investors still are able to excert good level of influence and control. The way this happens is via controlling the future flow of investment. If big investors gang up on not buying a stock or sell out en mass, the founders with dictatorial powers will have to bent. Uber is example where founder got ousted despite of his retaining voting majority.
