IKEA was originally a Swedish company and still does their design in Sweden, so perhaps it’s not surprising that a homemade Swedish desk looks a lot like an IKEA desk.

IKEA doesn't have a 3 meter desk last time I checked. I'm guessing he bought a 3 meter wood counter top and screwed IKEA desk legs to it. That's what I did at least.

Both Daniel and Ikea are Swedish, so it's not beyond the realm of possibility that Daniel makes Ikea desks himself.