Most marketing is for necessities, to steer which brand you decide to buy, not to make you buy a category of product you wouldn't buy otherwise. You need soap, they just want it to be Dawn soap. You need laundry detergent, they just want it to be Tide detergent. Etc etc. You're not going to stop buying food, soap, medication, gas, etc so that you can direct that money to tipping websites instead.