I am not sure what you mean by the high flying CEO, I am talking more from the founder's side who puts his money and time on the line. Take Musk as an example, he invested most of his money in Tesla and Space X and both the companies came close to bankruptcy.
Those companies and many others will not work as a cooperative.
Because most people who will be working in the cooperative are sane and will bail out if things get tough. You need a crazy founder to take enormous risks.
Just look around you, most of the tech titans are founders who took risk, can you give examples of tech cooperatives which are equally famous?
Please describe what "risks" the average high-flying tech startup CEO has taken.