Well, I've studied the virus in great detail. I've studied and read about the vaccines extensively, but I am less knowledgeable about them.
You pose your question as a binary choice. So, based on what I know, yes, it is in the public interest to get boosted. As we move from pandemic to endemic, we still don't fully understand this virus and how it will change and what challenges it will present. Based on that, at this point, it is in the public interest to get vaccinated.
The more people that catch covid and transmit it, the greater the chances of mutations that could be more dangerous.
We won't know for a long time how essential they are, so IMO, it's better to be safe than sorry.
As for the money being made, well, that's one that needs to be watched carefully by governments. Companies have a poor conscience and are ruled by profits. If we look at the history of the HIV medications, it was clear that profits were at the top of the agenda. It wasn't until countries threatened to break the patent on the medication that they started negotiating. As far as I was concerned, Pharma was very short-sighted. Without the medication, patients were 100% sure of dying. With the medication, the company had a customer for life, and it was a substantially longer and more productive life.