Well good and evil is a pretty binary description. You will only have a market if seller (the driver) and buyer (the service operator) are meeting. If the driver do not want to operate under those conditions there is no "invisible hand" forcing them to do so. Of course in lack of alternatives it is a small but easily accessible form of immediate income.

As I see it, there used to be little guys and even littler guys. Now the income of the little guy is shared among all little and littler, resulting in an averaging. It's hard to judge which is worse.

If we're lucky, this will actually bubble up, and we can better share the medium and the big guys work also.

That's very dependent on the specific service and on the person's situation. AirBNB, for example, can provide a very decent income for the work needed, much better than any alternative use of the property and time.