NFT's aren't currencies, so their economic impact is minimal. It's like asking whether the fine art market would have any sizeable economic impact. NFT's are just the next speculative market. I understand you have an ambitious project within the field but IMO your market niche is small. Positioning yourselves within crypto investors is the only target audience that works, general music and sports fans don't care nor understand NFT's.
I agree at the moment. At this moment a lot of useless NFTs needs to go first, then market will stabelize and innovate. In the future I see a huge potential for utility NFTs, gaming, collectibles, music, logistics, art, ...
The future will tell

The solution to that are Utility NFTs imo. If you have an easy to use app, and easy to buy NFTs with utility, it can help mass adoption.
For example NFTs as ticketing for events, that become souvenirs and collectibles with advantages in the future.
There are so many possibilities...we dont know half of it.