alt Hacker NewsThe point is that you have access to a 100Mb/s connection, and your access to that connection is unlimited. It doesn't become a 10Mb/s connection at some point, and your access isn't cut off - there are no limits on your access.
Of course there are practical limits as you can't make your 100Mb/s connection into a gigabit one (ignoring that you can buy burstable in a datacenter, etc, etc).
Where unlimited falls down is when it refers to a endlessly consumable resource, like storage.
I’ll be honest I think “unlimited” should just be banned from advertising. The literal definition a layman would understand is never what’s in the fine print. Every good or service has some kind of limit, whether it’s artificially put in place by the seller or a law of physics. Any way you can interpret “unlimited” to where it means “unlimited, except those limits” is false advertising.