That's probably more about what you pay attention to than the actual impacts.
> If a private solution can do a better job than public transportation
I just explained why it didn't - the price point was completely based on private subsidy. I live in an urban area of a major city, and there are times and areas where it takes 30+ minutes to get a ride, including a few months ago when I was maybe 10 minutes from the international airport at a reasonable hour (~10PM). Busses and trains have schedules which are fairly reliable. They run late sometimes, but there is a pretty reasonable guarantee that they will show up. They won't cancel after 10 minutes, the muni is ADA complaint, and will only cost you $2.50 to get within a few blocks of your destination. Yes, buses have a coverage problem in the suburbs, but my suburban relatives (who love ridesharing) have also been complaining about the price and availability the last 12 months, so it doesn't seem like Uber/Lyft are able to fill the last-mile niche reliably at this point anyways.
The only impact on the "economic actors" I noticed was that traditional cabs are now less likely to rip me off knowing I can always call an Uber
> Second, their below-cost pricing also enticed municipalities to replace public transportation services with ride shares paid for by the muni
The point of public transportation is to help people, not the other way around. Public transportation isn't a good in its own right. Let's be clear that public transportation failed the least well off. Trains and buses run less frequently in poorer neighborhoods and on off peak hours. Uber was a god-send for these people. If a private solution can do a better job than public transportation, be more accountable, be sustainable in terms of profit without the need for public funding, then I say private solution should win