"If theres one reason for Zaha Hadids exceptionalism its wealth."

She was by all accounts from the time, and in retrospect, a star student during her time at Architectural Association. Not just a top student but an exceptional student. She was also fierce in her determination to succeed, something still difficult for a woman at that time in a male dominated industry full of egos. She persevered, and like a lot of women of that time who did, were punished for it.

As well, I've heard plenty of stories about her treatment of staff which is inexcusable behavior, however that's immaterial to her artistic vision and capability.

Her connections certainly helped her career, yes, they always do in business. She wasn't exceptional because of her wealth.