I can't speak for the Weeblies but in the event that you don't need the capital for growth and you don't plan to be acquired then going public is the only way f

I can't speak for the Weeblies but in the event that you don't need the capital for growth and you don't plan to be acquired then going public is the only way for founders, investors and employees to see a significant release of capital from the company. You can just take revenues from the company but in many ways going public is lower risk (and obviously releases more capital too).