Starbucks doesn't like people looking at porn while inside their businesses. According to GQ they are blocking all porn websites with their Wi-Fi.

"We have identified a solution to prevent this content from being viewed within our stores and we will begin introducing it to our U.S. locations in 2019". -Starbucks Representative

Here's the thing, the porn people aren't happy with this:

So apparently if you work for You Porn, you can't drink Starbucks.