Technically it isn't: if you run an American business, you are subject to the Americans With Disabilities act as it is pursuant to electronic services [1].
Uber specifically would definitely fall under a "public transportation" service - accessibility is non-optional if someone decides to sue. [2]
Uber specifically would definitely fall under a "public transportation" service - accessibility is non-optional if someone decides to sue. [2]
[1] https://www.ada.gov/2010ADAstandards_index.htm
[2] https://www.businessnewsdaily.com/10900-ada-website-requirem...