i want to fazer um application of delivery com ipfs, to help small restaurants to deliver their orders without paying abusive taxes.

is it really viable to do with the ipfs protocol?

Yes, there is nothing stopping you from doing it.

In fact, OB1 (formerly OpenBazaar) already did an open-source platform on IPFS for selling things. Maybe you can take inspiration here :

Their application is now here :

and the Github:

Happy hacking!

Can I set up a payment system with a credit card or money?

or with IPFS you can only use crypto currencies?

why restaurants don’t use cryptocurrencies