In a real ride share you could negotiate the cost, say you find someone who is driving to where you work already you could figure out what they pay for the car

In a real ride share you could negotiate the cost, say you find someone who is driving to where you work already you could figure out what they pay for the car and the ride themselves, then you both get to use the rideshare lane, but you have a much lower cost for commuting than using uber or lyft to commute with a negotiated process to rideshare.