Solving a small problem for a lot of people is generally going to be more impactful than solving a big problem for a few people.
The former is usually the better fit for decentralized systems, anyway.
Discussion
Bitcoin is solving a big problem for everyone. Just almost no one realized yet.
Like the creation of pencils ✏️
Now everyone can write and draw pictures.
Solving a small problem for a few people makes no sense economically, but it can be extremely rewarding if those few people are your family or loved ones and you do it without them even asking, never mind paying.
It really depends man. I don’t think your first statement is universal at all.
But the latter pays you more