If you want to point out the kind of value professional managers bring to the table, please do so. Such an approach, in my opinion, makes the debate productive and moves the discussion forward.

I feel "professional" managers are bad for tech companies. Here are two reasons :

1. A lot of management techniques that are taught in business schools apply to traditional manufacturing based businesses. A lot of these underlying assumptions are invalid in the tech businesses.

2. Tech businesses require a deep understanding of what is possible with the current state of the art. This is requires a deep understanding of technology so that when there are fundamental changes to the landscape (which happens more frequently in tech) the company can adapt and stay relevant.