Being large is not illegal. Having a monopoly in a specific product is not illegal. The standard by which the antitrust officials judge companies is whether the company controls a sufficient part of the market such that the consumer is harmed. The problem with the current regulations with respect to Google/Facebook is that their products are "free" to the "consumer," and free can't be harmful (harm is higher prices). The state attorney generals complaint against Google tries to recast the "consumer" as advertisers. The reason Apple and Amazon get a pass is that within their "markets" they are still relatively small. For Apple, their market would be all cell phones (or in the Epic case the Apple lawyers define the market as all game platforms). Since they don't have a majority of these markets and consumers are free to switch within the market they can't be forced to change behavior. "iPhone" is not a market by antitrust definition. Amazon places itself in the total retail market where they are still less that 10%. As the law is currently written and interpreted most of what big tech does is not a violation of antitrust laws -- the laws do need to be changed for everyone.