Comment by srrr

I think the term gatekeeper makes more sense if applied to companies like Apple, Google, Microsoft & Co, with their search engines, maps, app stores, operating systems, browsers ... all these are gateways to "the digital market". Twitter might be to small and comparatively niche to be classified as a gatekeeper. There does not seem to be an exact definition that I could find. But social networks as a category and companies like Meta/Facebook are listed as gatekeepers.