This isn't typically an area where laws and regulations can work effectively because who knows until after the fact? Taxation laws do deal with this from a different perspective, for example most jurisdictions won't let a company take losses every year forever, as they judge the intent of a corporation. Even this is incredibly complex so I'm not sure how your idea would work, even the term "break even" doesn't have a clear definition, ex: do Capital assets still depreciate the same in the AI world? When did Amazon start to break even? What if they didn't deliver shopping on top of aws? Was that an unfair subsidization?

So we are going to pass a law that any new company initiative must be profitable in $x years? Are we going to outlaw loss leaders?