Please Review this Startup Idea

I think many brands find that one mention of "NFT" causes customers to run. The smarter ones observe it happening to other brands and they don't learn it the hard way.

https://www.eurogamer.net/sega-stalls-nft-plans-following-ne...

If the brand wants to market itself to crypto-bros, it'd be a good publicity stunt

But otherwise I don't see this offering anything that an NFC tag linked to a regular database maintained by the brand doesn't. "Authentically made by this entity" doesn't sound like a use case for trustlessness...

I don’t understand how a NFC tag linked with a NFT of the product ensures authenticity of the product.

Let’s say it’s for a designer bag. If that bag wears down, and I move the tag to a bag that looks the same but wasn’t sold by the manufacturer, how do the tag or the NFT help discover that the bag isn’t authentic?

NFTs are digital, not physical. So you need to make sure you can associate the NFT with the product. An NFC tag isn't enough, because like others mentioned, you can move the tag to a different bag so it doesn't actually prove authenticity.

But NFTs are more collectibles, so arguably you could sell the bag WITH an NFT as a bonus (not as proof of authenticity) and I think people into NFTs would like it.

Or make sure the NFT metadata has something to associate it to the physical product so you can prove that it hasn't been tampered with.

There is value in supply chain transparency and bringing trust, however we don't need to create 3rd party markets for creating or trading these identifiers. So it depends on what the NFTs are for in this situation.

Are you planning to use a public, permissionless ledger like Ethereum, or a private, permissioned ledger like Hyperledger Fabric? (The first is bad, the latter maybe ok)

While the consumer may find value in this, will the company prefer to put this transparency off as long as possible because of their dirty laundry they are hiding?

https://te-food.com/ This is blockchain usage for food traceability - used by big companies in Europe (Auchan). Take a look this might give you inspiration, I think the idea can go beyond food

How would a normal Joe/soccer mom even know how to verify it via the NFT?

This sounds like a horrible idea, to be honest.