yet they have a little box on the counter to do lightning payments? 

 i'm pretty sure you are old enough to remember when it would seem ridiculous for a bakery to even have a computer but here we are 

 also what's the blocker?

routeable internet address to allow it to receive messages?

that's an opportunity for a business to charge to bounce traffic to them for their domain 

 The number of startup companies that onboarding just gives you shared access to a set of shared passwords is near 100%.. so I guess with nostr the only difference is we can't change the password easily 😎 

 Which is a big difference.  

 I also don't see a bakery at the corner holding keys -- I guess the owner would have some keys on his phone or something? But this is trying to fit a dystopic world (yes, people with phones is a dystopic world, in a saner world people would have computers where they could run an nsecbunker).

But I also agree with you. 

 Don't be dismissive about the future tech prowess of "ordinary businesses" or "ordinary people".

Ordinary businesses and people managed to type on a keyboard, run wifi or send email amongst others which all seemed need stuff out of reach at some point. 

 Small businesses do run servers, and if they don't they will use a provider to help them with this, e.g. WP Engine and Woocommerce for small business is actually big business.  

Don't underestimate the multitasking that small business has to do, bakery or not, we have to do all the things ( I'm speaking from first hand experience here in an industry that is not software/tech heavy) . Also the bakery in my area has its own IT, and its a small bakery but also a cafe/restaurant, which has its own separate needs for IT