I would argue the lack of action against those was due to lack of political will. At least at the beginning many saw Uber and Airbnb as net positives, American led innovators offering competition to hotels and taxi cartels. TikTok on the other hand is getting hammered by both sides of the aisle. the incoming admin has its contradictions but has been pretty pro tariff / anti Chinese competition so I am not sure games like that are going to play much but we shall see.