When the new ownership came in, they made some decisions I wasn’t pleased with. And when they changed the whole aspect of it, I just totally lost interest.
Meaning of the quote
The quote means that when the new owners took over, they made some choices that Alonzo didn't like. And when they completely changed the whole thing, Alonzo lost all interest in it. In other words, the new owners made changes that Alonzo didn't agree with, and that caused him to lose interest in the situation.

About Alonzo Mourning
Alonzo Mourning was an American professional basketball player who spent most of his 15-year NBA career with the Miami Heat. He was a tenacious defender, winning the NBA Defensive Player of the Year Award twice and making the All-Defensive Team twice. Mourning also won the 2006 NBA championship with the Heat and was inducted into the Naismith Memorial Basketball Hall of Fame in 2014.
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When the new ownership came in, they made some decisions I wasn’t pleased with. And when they changed the whole aspect of it, I just totally lost interest.
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There’s a disappointment there because I still feel there’s an emptiness in my career that just wasn’t filled.
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