The Pink Line Supports the Purple Line

These two lines do not "compete" with each other, they compliment, reinforce and strengthen each other, and the Red Line too.

Check out this article from WeHoNews.com
wehonews.com/z/wehonews/archive/page.php?articleID=2298

Note the following excerpt:

To their own surprise, the proposed subway expansion makes better sense to planners when a Santa Monica Boulevard route is added to the traditionally better-preferred Wilshire Boulevard route.

A crowd of 75 attendees listened in rapture while Long Range Transportation planners explained how a Santa Monica spur running from the current Hollywood/Highland Red Line Station hooking up with a Wilshire line south of West Hollywood would not only increase ridership significantly, but also provides enough in travel time improvements to give Congress reason to fund the subway expansion.

“What was surprising to us,” David Mieger, project manager said, “is that adding Santa Monica Boulevard to the Wilshire route, in compliment to one another, it works [from a feasibility, cost and ridership perspective].”