Earlier quoted context omitted.
It is hard to guess what people would work on without needing to worry about money. You might try your novel, and one of two things could happen: You find out you love it, you write a really good novel, and society wins. You try it, find out that the actual experience of writing a novel is a drag. No harm no foul, you move on and keep trying things until you find something you are really passionate about and good at,…
You can also find out that you love it despite the novels (or software or paintings or poems or whatever) not being interesting for almost anyone else or even being available to anyone, but as you don't need the money you can keep doing that (and only that) and society simply loses out on whatever you're doing currently. The key part of what people would work on without needing to worry about money is that there is l…
I think a strong argument can be made that the current system does not necessarily align the work being done with the interests of others in a broad or universal sense. Think about a corporation with a very useful drug whose patent is about to expire. Allowing the drug to go generic would be in the best interests of many poor sick people all over the world (patent harmonization means even poor countries must follow US patent law or get locked out of global systems). However companies often find legal tricks they can use to effectively renew the patents for their drugs. This aligns with the interests of some people - the shareholders for example, but is detrimental to the interests of sick poor people all over the world.
And this isn’t a hypothetical, this just happened again two weeks ago with Johnson and Johnson and only a coordinated pressure campaign from some high profile YouTubers was able to get the company to relax their plans: https://youtu.be/tMhgw5SW0h4
However when there is no profit motive, people often work on problems that they personally need to solve, and there is often good alignment with the work they are doing and the needs of others.
More broadly, we can say that the current system does not necessarily align the work being done with the needs of most people, and that alternative ways of aligning that work must be possible.