I think the powerful incentive, I agree isn’t the POS, it’s better money that stores their value, and has a finite supply and there is growing demand for people who want to pay in it. Here’s an app that gives you the ability to accept this money as a form of payment from anyone, anywhere in the world and you no longer have to give visa and mastercard 3-9% per transaction. 

Then when you reach a significant amount, here’s how to withdraw that money into self custody where only you control it. So I feel like conveying this idea, along with an app that has an incredibly easy on boarding experience like Wallet of Satoshi or Blink and then sending them some sats over the lightning network will have a positive effect on them wanting to use bitcoin.