Uber's Deliveroo Purchase Stalls

Uber's plan to buy UK food delivery startup Deliveroo has stalled.
Why?
Business Insider and the Financial Times report the two companies are "miles apart" on Deliveroo's valuation.
Uber reportedly offered less than the company's current $2 billion valuation.
Deliveroo is pushing for $4 billion.
Deliveroo is direct competitor with its Uber Eats delivery service.
Uber's desire to buy them was first reported in September.