Why, though? Why can't Boeing do it?

When someone's installing seats (or some other independent component), why isn't someone else installing wifi?

I have booked flights on 223s over 7M8s in an effort to stay connected. Not if it's the difference between an 0600 departure and a 1200 departure, but for less drastic differences where both times work.

I've also booked UA over AC when AC had no options where I was confident there would be wifi.

Now what should I do?

I'm literally in the process of planning a trip where we need wifi on the outbound. There's never a guarantee it will work, but if we can't be confident the system will even exist, then we can't fly AC.