Went to the bar to get a drink, I was sober, had j...

Went to the bar to get a drink, I was sober, had just walked in after working and met a couple of people in the bar.
I asked for a drink and was refused service?
I was told I couldn't have a drink until one of the people I met there, who was intoxicated, left.
I didn't argue, I just found it odd that she put the responsibility of evicting them onto me and that I had been refused service because I was in the company of an intoxicated person.
Why did she feel it was up to me to remove them from the premises?
The bar person should have closed the bar and not served anyone if that was the case.