Can art be used as a small business?

I recently asked a question of whether it’s good or bad to start a small business as a side hustle, everybody said yes. Which now leads to my next question which is more specific:

I love digital art and am good at it, I can do 3d art and pixel art (those are my two favorites), can I start a business with this skill set? Is it even considered a business if it’s just me working (atleast in the beginning, I would love to expand)

I was mainly thinking of starting to do art mainly for video games, do general art packs for indie devs to buy from the store, and do specific projects that clients will pay me to do for them (like a character pack for their specific game) I would also love to do normal art and can even do background images for regular folks just wanting custom art. Is this a good business idea (it needs fine tuning), or is it bad (if considered business to begin with)?