I'm not convinced that reducing regulations is the way to get rid of monopolies. The first major experience with monopolies in America was before the great depression, when regulations on most businesses were virtually non-existent. Economic history is fairly clear that unregulated markets consolidate into monopolies without regulations to ensure ongoing competition.
While there are certain cases where regulatory capture has created regulations that enforce monopolies, this isn't the case for the entire tech sector in general.
Regulatory monopolies protect telephone, cable, and Internet providers. In some areas it is simply illegal to construct competing communications infrastructure. Under Trump, the national security process is also now being used to protect market incumbents; the TikTok confiscation--that Zuk----rg lobbied for--coming just as Facebook is planning to roll out a TikTok competitor likely isn't a coincidence. Removing these regulations would help competition in these areas, and should be done.
However, outside of these cases, the tech sector in general exists to make a legal revenue stream from loopholes and lack of enforcement in the regulatory regime. Platforms like Uber are only viable businesses because they've been allowed to circumvent both minimum wage laws and regulations surrounding the taxi industry. AirBnB is, fundamentally, an unlicensed franchise hotel operator, and is only viable as long as regulators refuse to require it to abide by the same rules as the rest of the hotel industry. Much of the contemporary video gaming sector is based on evading regulations on gambling. Finally, adtech firms, like Facebook and Google, are only viable because the US has no consumer privacy laws. Taking away what little enforced regulations cover these firms would not benefit consumers or market competition.
Quite frankly, so much of the tech sector was built on the monetization of socially destructive behavior, legal-but-predatory business practices, "regulatory arbitrage", and outright illegality, that large parts of it should be outlawed entirely.