I feel the biggest problem is most of this happened before there was awareness. This isn't something an individual can stop anymore, it needs an collective massive effort to stop, blocking ads or trackers is only fighting the symptoms not the cause. So we need these practices to not happen, somehow. Legalisation is the obvious answer and there lies the problem, this is one thing where technological advancements fast outpaced legislation, and it doesn't help that big tech generally goes the way of practicing questionable or even illegal methods simply waiting to be called upon, then get away with empty promises, operating internationally they've gotten too powerful for a single government to deal with. So we need intenternational governmental cooperation in an field where those same governments benefit from this data, good luck with that. (is love to have a purely technical solution like blocking ads to work, but the problem isn't a technical one)