If you think The Sphere is cool from the outside, wait until you see the inside.
The humongous spherical screen in the inside is amazing (16K resolution according to Wikipedia).
U2 is sold out, and the tickets are not cheap (I payed $500 for a partially obstructed view of the screen, others run at $1,500), plus the "Sphere experience" so I think it will pay out.
There is also "The Sphere Experience" movie at $50 a pop.
A Capacity of about 19,000 people.