"A study conducted at Harvard University found that people were willing to forgo money so that their opinions would be broadcast to others. We are not talking about well-crafted insights here. These were people’s opinions regarding mundane issues, like whether coffee is better than tea. A brain-imaging scan showed that when people received the opportunity to communicate their opinions to others, their brain’s reward centre was strongly activated."
I always thought that "forgo" means "do without" that's why I first thought this sentence expresses that people are willing to do without money (accept that they don't earn anything) as long as their opinions are shared online.
After reading the paragraph multiple times, however, I got the feeling that it means users are willing to pay in order to share their opinions online.
Can "forgo money" translate to "spend money and thus do without the amount you chose to spend"