I’d be pissed off I were investor B. They effectively gave your company a $5M valuation based on the numbers you shared and you’re selling for less than half that less than a year later…

Based on the details you’ve provided, what you’re doing is will within your rights. Additionally both parties are beholden to the contact, so sucks to be investor B… But they still have every right to be pissed.

Why not?

For all the concerns about this idea… School buses are literally Uber for kids on a large scale.

Seems to me that many of the “problems” have been addressed by that industry.