We won’t be able to tear them down. We don’t have the resources to break apart these large corporations. They climbed to the top via the best strategy: find a pipe of money or flow of money in the economy, straddle it and start extracting bits of it like a parasite. In other words, “rent-seeking behavior”. Eventually you get enough money that you buy all the corporations and competitors around and above you so you get bigger. Then you buy the congressman at the top that oversees the laws and regulations, and you use them to make laws in your favor that make it difficult for your competitors to compete with you or keep up with regulation. The end result is that your competition gets buried, and you balloon to the top. Then it’s your goal to get as much money as possible.
Since we can’t tear down large corporations because they captured the regulators (or are financed by governments), the only thing we can do is opt out. You, reader, have already started opting out by using the Fediverse.
The danger of centralization becomes more apparent over time. Continue to use decentralized solutions. Don’t be an evangelist and try to convert people.
Instead, when people get burned (and they will), they will find us. The grassroots people, the anarchists, the ones that just want their freedom from their oppressors.
Give it time. Write your politicians, vote like a good citizen, and when your rights get taken away from you, don’t make letter bombs or rage against your fellows in the working class. Instead, opt out. Take back control by using decentralized systems that can’t be controlled.