Related to the previous post, here is another positive push for transit and shared mobility working together and not in competition. This report put out by TCRP talks about how transit agencies can re-imagine themselves as mobility agencies that use a wide range of mobility options (typical transit, paratransit, rideshare, ridesourcing, carshare, bikeshare, etc). Excellent thinking and research in there.
There is also an accompanying webinar recording here that summarizes the report. This webinar talks about all of the possible, progressive futures, but also warns how detrimental a future with only AV cars (and no transit/paratransit) would be.