I work for a startup that is less than 3 years old and has ~90 employees of which ~50 are software engineers and data scientists (people writing code). We're VC funded and not profitable yet. When I see a pricing tier called "Enterprise", I do not expect to fall under that tier as a small, young company. But looking at the limits of the Team tier, we would probably not fit under that tier because we have more than 30 repositories. We also use Github Enterprise (cloud version), which puts us in your Enterprise tier as well.
If the Team tier is already $30/user/month, I'm afraid to even learn what the Enterprise tier is like. I guess we're not your target audience and that is okay.
Here is when I would consider paying for your product: remove the repo limit (or make it much bigger) and half the price. That would make it affordable and more in line with the other tools we're paying for.