There are examples of successful companies all over the founder mode spectrum.
What level of "founder mode" is optimal depends on a lot of factors. For example:
- size of the company - available people (at every level of the company) - type and number of products (is it possible to scale the work over different departments?) - qualities/personalities of the founders (trust me when I tell you, being micromanaged by a non-technical founder on a technical product is not effective) - type of business (for example; in aviation, you're going to need a lot of certification management)
And you can execute poorly all over the spectrum, even when making the right choice on the level of "founder mode".