BRUSSELS (Reuters) - Elon Musk's X social media platform is unlikely to be subjected to landmark EU tech rules which aim to rein in the power of Big Tech because it does not meet the rules' gatekeeper criteria, a person with direct knowledge of the matter said on Friday.

The European Commission in May opened an investigation into X after the company rebutted earlier indications that it may have to comply with the Digital Markets Act (DMA), which imposes a list of dos and don'ts on Big Tech.

X has said it does not qualify as an important gateway between businesses and consumers.