> can often use bus lanes

Indeed, that should be banned right off, but as you astutely point out, rich people want to get around faster than the rest of us.

Why? Its not like bus lanes are exactly overflowing with traffic would you ban cyclists from bus lanes as well.

You could let teslas in bus lanes and they wouldn't be overflowing with traffic, that's hardly the point. Bus lanes should be for vehicles that add very little to congestion, either because of the number of people transported (as in the case of a bus), or because of the size of the vehicle (bikes, motorbikes, e-scooters).

Black cabs (and ubers) have an effective occupancy even lower than private cars.

A lot of cab and uber use in London is groups not just singletons - its cheaper for 3 or 4 people to use a back cab or uber for short journeys than use the tube

So allow high occupancy vehicles (say at least 3 passengers, 4 for taxis) in bus lanes.