I can’t vote out Google. Their customers are advertisers, not me. And I don’t know which apps on my phone send my information to Facebook or what they do with it.
I can't avoid not paying taxes to fund the catholic church in my country, that uses that money to lobby homophobic laws... I can block Google and not use them.
This is not a simple "just vote them out", unless you're part of the privileged majority that can affect the policy.
If you can avoid a company, the fact that there is an acceptable alternative itself says that the market is not monopolized and so there is less chance of abuse.
In the markets where abuse is possible there are often monopolies, or there is illusion of choice like a (colluding or copycatting)duopoly or one where all the "competing" brands being owned by the same parent conglomerate etc.
It is very difficult to participate in the modern economy/world while avoiding certain companies. It might be possible but there are both social and economical costs involved that majority cannot afford.
Avoiding a company doesn't necessarily mean there's an acceptable alternative. I could use no social media and my life wouldn't be much worse or burdensome.
There's very little I can do to prevent the government from doing what it's doing by myself.
You can stop doing business with Mom&Pop’s coffee shop relatively easily, just like you can move to a different town to get away from your city government authority.
But you’re practically never going to truly get away from Meta, Google, Amazon, Nestle, McKesson, ATT, and those behemoths due to their size, similar to how you’re going to struggle to get out from under the US Federal government.
No, you actually can’t, in a very real and practical sense.
But telling a small newspaper to stop using ads for revenue, when you aren't willing to financially support them is... hypocritical.
In short - just like a lot of "this ids good for you" laws, this will definitely impact smaller companies way more than you think.