Did you read the article? The vote that you're referring to, found farther down in the article, was the one to remove all caps from taxis. They council voted against it.

If you read the beginning of the article, the one placing the caps on alternative taxis passed: "the Seattle City Council voted 9-0 Monday afternoon to enforce new legislation that will regulate app-based transportation companies like UberX, Lyft and Sidecar."