Slowly, then suddenly.
nostr:nprofile1qqsvwct7ssehccgu040egxe4k8k9ru4wd605r2kfv9sf94gsu8pftcqppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7lvsgtm joining the ranks of nostr:nprofile1qqsvn0dkjt80raqrxd470c98n7zrdehmcvj6p5hgw3kyku6zyd8z0fqpz4mhxue69uhk2er9dchxummnw3ezumrpdejqzrthwden5te0dehhxtnvdakquw0j5p in allowing users to pay bitcoin invoices via their cash balances will be so incredible for adoption.
Once enough users are doing this, we'll see Venmo join in on the Bitcoin fun too.
Technically speaking, people wouldn't even have to be Bitcoiners to take advantage of paying zero fees or extremely low fees. They just need to be aware that a round about way exists at checkout to save 3%.