why does it has to go through Google or Meta?

They have a duopoly.

There is no law to prevent traditional media to have their own union ad organization right?

No law, no. But, you understand how monopolies / duopolies / cartels work, right?

Toronto can refuse and run their own ad space selling like old paper times

No, the old times are gone.

Toronto Star don’t have enough technical people to handle online ad?

It's not technical people, although they don't have them either. It's that they don't have the reach / coverage / power of the duopoly and can't realistically compete with them.

don’t know how to do ad pricing and conversion tracking?

Again, a red herring.

Those aren’t google’s fault, if traditional media wants to save money on upgrade their ad technology and backend, they will ended up forking money and purchase what others provided.

That's like saying that if you don't like Bell Canada's phone prices, just start your own continent-spanning telephony company.

my question or intention is to ask directly in the game’s community

Which is likely to be polarized for either AMD or nVidia.

Lastly, say, if people go through say, fine art school, should we protect their job opportunity?

Irrelevant to what we're discussing.