The only reason any of those laws exist is because of unions, and more specifically, because union members physically fought for them.

Laws are great when everyone agrees to respect them. When that respect falters — gestures widely — it’s time to fight.

That would be nice, but the government is controlled by the same people who don't want you to unionize, so good luck.

Besides unionized wages are higher, so those "fees" are more of an investment, with much higher returns than you'd typically get for investing only $700/year.

That's not how this works. Pretty much all labour protections have been fought for by unions. Without unions none of those would exist.

Unions would be useful even then, and if american history over the past decades is any indication, strong unions might be necessary to keep those laws too, lest capital use it's influence to erode them without an organized force to counter it.

Joining a union is easier

Laws dont work when nobody enforces them

I live in Denmark, a country known for its great worker protection laws, and that is only because of the unions. I pay roughly 1000$ p.a and let me tell you one thing, that is the single greatest money I’ve ever spent. It is sort of a safetynet above the government one plus a lot of other things. Worker protection laws are great, but they won’t happen without your unions fighting for them.