[forgetsusername]

>The concern is that once all the competitors die, the dumper will have a monopoly and jack prices up

I'm not sure how relevant it is to ride-sharing, because the industry is not particularly vital to the economy, and the barrier to entry is low.

Where it becomes a concern is in crucial industrial infrastructure. Over the long term, China, for example, can dump cheap, government subsidized steel in the US, obliterating the domestic steel industry. 40 years down the road there's nowhere else to buy steel, which is bad both economically and militarily.