What is stopping American skyscrapers from looking more interesting?

I dont know much about architecture, I just like the way cool buildings look.

Im curious to know if there is something holding back American architecture that i am not knowledgeable about.

In my head, im thinking that we dont have technology holding us back from making buildings look cool, and giving life and identity to a city.

Is it budget? Does it cost much more to make buildings and skyscrapers look more than concrete/glass boxes?

For reference, the picture is of Rockefeller Tower (1072 W Peachtree) in Atlanta.

I used to walk by this construction every day when i lived near it and was so excited because I love skyscrapers, and it is the first real skyscraper being built in my city for the first time since even before I was born.

Now that I dont live right next to it anymore I just see it occasionally from the road, and Im kinda disappointed as to why they went with such a basic (and frankly a bit ugly) design, instead of making something unique or special, since its been so long.

I dont know if its because of budget cuts, or if there is an ulterior motive to this or something lol.