Look at Phoenix. Sarver has owned the Suns since 2004. The Blazers probably wanted to get ahead of this before the NBA had to step in. The last thing the team wants/needs is for the NBA to step in and look int this.
Look at the Clippers situation with Sterling. It was a WELL known situation there, but it took years, decades, before anything was done.
We're in a different culture right now than even 5 years ago. People (employees) are getting more power (some would argue they're getting the power back).