...There are a couple of lawsuits making their ways through the courts trying to create precedent that various major tech companies are "publishers" under section 230, and there is a small push in congress that would force companies to be politically neutral to get section 230 protections/benefits.
These companies will most probably not operate without section 230 protections, and if there were requirements to keep these protections, the companies would follow these requirements.
Congress is pretty hopeless, and these companies' censorship favors democrats. So democrats will fight those reforms, that that's what we'll be looking at through the 2020 elections. But it goes considerably deeper than that.
Any politician who is thinking about the long term should be worried about this. Today the tech companies favor Democrats but tomorrow they may favor republicans. ....