How to make profit from Tate Modern

I decide to add some color in my life and take my Turkish friend to the Tate Modern for the first time in his life.
There you see his opinions and suggestions on how to run Tate Modern properly and make some money..

-Too much brick my friend. way too much. cover the walls with cheap concrete then  you can sell them bricks as reclaim stuff to the trendy newcomers in Hackney.

-Why is this big chimney thing there doing for nothing? I would rent it to the billboard company. get some ad money.

-Gift shop? silly idea.. turn this silly gift shop to an off-licence. you make a killing. since I don't see many around this stretch  of the river anyway..

- This empty hall is such a waste.. turn it into car park.. its very expensive to park here, thanks god i have my late aunts disable badge. anyway, i would put my cousin here by the door and charge each car set fee of 10 quid. you make a killing.

- silly stuff on the wall. you call this art? I bring my cousin here to paint them wall with nice village scenery, cows and sheep and some moving waterfall frame..  or go to IKEA they have some nice pictures there and very cheap.

- electricity bill here must be high here. get rid of these funny lights.. I 'll bring my cousin here to install fivehundredmillionzillion fluorescent lights here so people can see the art properly.