In the early 2000s a lot of people rolled with no encryption at all! In high school I'd drive around the nearby neighborhoods at lunch until I found an open wifi network so I could browse the net. Never took long to find one.
If vendors didn’t make it a default setting that would still be the case today
I remember when SunOS shipped enterprise servers with pretty much every service enabled. And the patching process was so cumbersome and risky many admins never bothered applying the recommended patch clusters
So much to explore and poke at!
And what about "borrowing" internet access by using a WiFi connection that used WEP? Learning the process and getting the first password was so satisfying...