It’s easier and cheaper to just run one wire. Most people don’t want more than a couple different port locations so why bother?
And you’re not installing the other two items so it’s not your responsibility. You’re also not going to get paid more for doing the extra work. Even if the homeowner was the one paying you, most aren’t willing to pay a bit extra just so it’s easier on the next guy.
Laziness more or less.
It’s easier and cheaper to just run one wire. Most people don’t want more than a couple different port locations so why bother?
And you’re not installing the other two items so it’s not your responsibility. You’re also not going to get paid more for doing the extra work. Even if the homeowner was the one paying you, most aren’t willing to pay a bit extra just so it’s easier on the next guy.