It certainly would be a tragedy for all of the drivers who lost work and may struggle to feed their families. Many of the drivers are immigrant men who have few other prospects for work.
There must be unprofitable business activities that would make better jobs programs. Student stipends, vocational training, teachers aides for natives learning foreign languages, subsidized English language lessons, almost anything would be a better investment for immigrant men than subsidization of unprofitable delivery services. Arguably just handing out money and skipping the unprofitable business activity would cause less damage and waste to the environment.
Don't get me wrong. I've used and use these services at times. I'm not morally opposed to them. I just think that saying that telling someone by not using them they're hurting immigrants is just a whole lot of backwards.
Backwards? What's backwards about wanting to inform people of all the consequences to their actions? Life is messy and complicated. Far too often people don't want to think about all the consequences to their actions so they can erase that complexity.
As an aside, not all of these companies are Silicon Valley-based anyway. SkipTheDishes, the one I use, is a Canadian company.
At some point we need to fix societal issues instead of worrying that not consuming goods or services is harmful.