In Do Androids Dream of Electric Sheep?, Deckard obsesses over the animals he owns (or doesn't own). Throughout the novel, Deckard tries to acquire an animal to replace his dead sheep. Fittingly, the novel closes on the character settling with the fake toad he has found, seemingly content with (at least resigned to) it. In The Girl Who Was Plugged In, P. Burke is used by the GTX corporation to peddle preselected goods to the masses. This looks like the authors are trying to caution us against covetting material goods, but I believe this overlooks an important point- we control our desires, we control what is given to us. It is only through the will of the people that corporations do what they do, not vice versa.
First, analyze Do Androids Dream of Electric Sheep?. Rick Deckard loses his pet sheep to tetanus from a wire in the sheep's food. He buys a fake sheep to replace it but is thoroughly embarrassed and troubled by it. Throughout the novel, he tries to acquire an owl, rabbits, a goat, and finally a toad. The reason Deckard needs an animal is because society looks down on people that do not care for nearly extinct animals.
The ubiquitous Sidney's catalogue dictates the value of any given animal, even ones that have died out. This looks like a form of advertising. It appears as though the Sidney's company gets to tell the consumer how much his animal (and therefore he) is worth. But there's something more to that. Sidney's doesn't invent a number; it reports the last transaction price. This is no different than NASDAQ telling us what our stocks are worth. It's totally independent of the company's opinion. It is all determined by the buyers and sellers of that particular item. Those are the consumers, not the corporations, calling the shots. The population decides what it will pay, and Sidney's just reports it.
Also of note is that it is not the animal breeders or the builders that have made animals popular to own, it was society's own self-determined mores. The war killed animals, and people decided it was right and fitting to take care of those left. The corporations followed the population's lead here.
The same can be said of The Girl Who Was Plugged In. This story is about advertising. While Do Androids deals with "How much am I worth?", Girl deals with "What is more worthy than what?" In the futuristic world, advertising is banned, so people have very little to guide them through the selection of goods they choose to buy. The whole idea is subverted by the GTX corporation that makes what amounts to secret endorsement deals. The manufacture celebrities that advertise to us via usage of items.
The themes of "gods", "dead daddy" and "zombies" make it seem like the population just absorbs whatever is advertised to them by the god-like celebrities, but a closer inspection shows that it is just the opposite. GTX employees talk of "the pendulum swinging". The narrator speaks of the holocams having feedback. The quote is something like "dial into whatever ethic-sex-gender-age-class category you like. They like it. Give them more. Warmer, warmer, burning baby." (Okay, so you caught me. I lost my copy of it and can't give a direct quote. Close enough.) Interestingly enough, it's not the corporation deciding things after all! It's the people, en masse, deciding what they like. Those things the population likes are what the celebrities will wear and use. GTX doesn't decide where the pendulum swings, it just tries to ride with it.
So both works have something to say about the way goods and services are consumed. They both show consumers clamoring for the same set of goods produced by a powerful industry. However, neither work should be interpretted as saying that we buy what corporations want us to, but instead that corporations give us what we already want.