> Does this mean if you ever built a company, and it gets too big, it will get nationalized?

Why not? I guess it also has to provide some important infrastructure for other companies.

> And what will keep the law from evolving to nationalizing slightly smaller businesses as time goes.

That's a slippery slope argument. Do you want to nationalize nothing?

> Why not? I guess it also has to provide some important infrastructure for other companies.

there are so many reasons it would literally fill hours of political philosophy and economics debate.

and has. These debates have been had. At length, and for many years.

> That's a slippery slope argument. Do you want to nationalize nothing?

I meant where do we draw the line?

We're already drawing a line since some things are already nationalized. We'd just need to move it.