“So with the dangers of standing up in D.C. greater, their existential concerns about Net Neutrality reduced because of their own massive size and a desire not to spook investors, it is unsurprising that Silicon Valley giants have melted into the background and have preferred to work through their trade associations,” he said.

The three Republican members of the F.C.C., who make up a majority of commissioners at the agency, have committed to roll back the landmark broadband rules created during the Obama administration.

It’s a restrained approach compared with Google’s aggressive lobbying campaign in 2006 when Sergey Brin, one of the company’s co-founders, went to Capitol Hill to argue for the importance of net Neutrality.

On Nov. 28, Brad Smith, Microsoft’s president and chief legal officer, tweeted that “Microsoft believes in preserving the open internet & opposes weakening net neutrality protections.”

In recent months, the company’s chief executive, Reed Hastings, has said net neutrality is no longer the company’s “primary battle,” partly because Netflix is now large enough that it can secure the deals it needs with internet access providers to ensure its service is delivered smoothly to customers.