This is quite right. PragmaticPulp's phrase "an act perpetrated by evil corporations on us helpless individuals" is a bit of rhetorical jujitsu, creating a strawman to set up a rallying cry "I believe people have agency!" You don't have to assume that individuals are "helpless", as if they are generally helpless and lacking agency, to agree that these corporations are exploiting them.

That said, people's agency is limited (bounded rationality). Awareness of how one is being manipulated is not evenly distributed among the population (asymmetric information). And even when there is awareness, people are unevenly affected by it and unevenly empowered to deal with it.