Often the only person that needs convincing is you.
Josh Homme started Queens of The Stone Age because the music they play didn’t exist when he thought it should.
If there’s something you think needs to exist, or similarly if you see something you like and think you could do that too,
Do it. Try it. No one’s stopping you.
The magic number is one. That’s how many people you need to convince to know doing something is truly worthwhile.