A successful growing business is never profitable, most / all the profit is reinvested in the business. There will per se be no investor return relatively speaking.
I recently saw an article this past week that suggests a better structure: the investment is a loan that is forgiven if the business folds.
This is actually better for both sides: the investor gets their money back with some fixed return if the biz succeeds, and the business doesn't have to pay it back if it fails.
Then it becomes a small tech business entrepreneurship Loan/ investment vehicle. In which case the pitch to the city is the their investing in furthering local biz growth in a way that has potential to have a multiplicative return for local industrial base.
Tl;dr no small privately held biz is ever truely profitable, structure it as a forgivable loan upon biz failure.