I don't think that's really a relevant argument to whether they should be classified as employees. Huge segments of the economy have already fallen apart, and more will fall apart in the future.
Their model is to be a gatekeeper to customers via their platform - if they are successful, none of those blue collar workers trying to climb out of underemployment will have a chance at running a small ride business, because only large platforms have access to customers.
If everyone suddenly becomes a freelancer, companies are free to push externalities onto society because there will be enough people willing to take the hit to their rights/benefits for any kind of employment. It's a race to the bottom that benefits only the company that has access to the customer base.
We have to choose whether we want that or not.