I do use Lyft to get to work most days (or did, in the Before Times). I just checked a few hopefully-representative months (June/July/August 2019) and it looks like I was spending about $400/month. Google tells me that the average TCO of a car is about $700/month, so this would seem like a net win. That average might not be representative of my needs though - it's likely being dragged up by people driving around giant SUVs and such, so take this comparison with a grain of salt.