If I started my own (tech) company one day, which I probably won't, but you never know, here's a few radical ideas I think I might implement:
1. Company is not allowed to grow to more than 30 employees/contractors.
2. Company has a $0 marketing budget.
3. There are no dedicated sales people.
4. As part of (3), this necessitates everyone having a "backup" role that is not closely related to their primary role. This helps reduce the bus factor, helps people have a more holistic understanding of the business, and allows for vacation and sickness to not overwhelm part of the company.
5. Everyone takes periodic turns in support and operations, even for just a few hours per month.
6. Radical compassionate accountability.