Ikea has been in the business of furnishing homes and offices with furniture since 1952. They have a wide variety of items available for purchase, including beds, sofas, chairs, and tables.
They also have a wide variety of items that can be assembled into furniture, such as the Malm Bed Frame.
In 2000, Ikea paid US$2.6 billion for the Swedish furniture company DaimlerChrysler. At the time, DaimlerChrysler was the second-largest furniture company in the world.
DaimlerChrysler was subsequently sold to Volkswagen in 2015 for €15 billion. Presumably, this sale made Ikea the largest furniture company in the world.
Does Ikea own DaimlerChrysler? This is a difficult question to answer. The answer may not be clear, because the terms of the sale are not public.
Presumably, though, Ikea acquired the company outright. This would make Ikea the largest furniture company in the world, without any competition.