I wish “illegal cab company” would too, but I also have no sympathy for shitty actual cab company. It’s not even about the money for me, they had many chances to innovate their systems and squash the illegal cab companies before they got started while at the same time generating more fare revenue, but instead tried to use the status quo to smother out the competition.
If you’re not married to playing 5e, Pathfinder has an amazing beginner box that slowly introduces the ruleset. Then you have the benefit of an open source system with the full srd online in an official source.
https://paizo.com/pathfinder/beginnerbox