Actually, patronage was the default form of compensation for the arts during most of human history. You should question your world view.
> do you feel obliged to buy the products being advertised
Irrelevant to the conversation, let's dispense with straw man arguments.
Not irrelevant nor a stawman, but does show the fault in your argument. Somewhat ironic of you to accuse that given the above. Oh well.
At this point you are being disingenuous as well as devolving into insults, so I will end this discussion here. Please use good faith when engaging in discussions on this platform.
Forming an argument with the unfounded pretense that everyone is obliged to donate is somehow not claiming everyone is obliged to donate. Yet somehow I'm the disingenious one.