Primarily Democratic backed company that doesn't like Republicans and don't want to provide them service? Boom excluded - "We reserve the right to refuse you service!". And honestly with as much data that has been collected they could legally do it on a data point that's not tied to your politics(ie misdemeanors, felonies, court cases, etc). It's absolutely going to be discriminatory, and they can hide it in the algorithms. And, not to pick on Democrats this is possible for any group, or individual to clearly point at any other group/individual. This is just the start, but it might be the actual end of individual expression without repercussions.