I’ve seen some nasty endings to working partnerships over the years, really nasty. In fact I’ve seen friendlier divorces in a lot of instances.
Even if partnerships end reasonably there is always financial fallout. I had a friend who had an extremely successful retail business; he and his business partner had a huge shop selling music, musical instruments and hiring out disco gear and lighting. The partner had a sideline in a comedy dance band, used to wander off to Germany to entertain troops and on reflection, really wanted to be famous and the successful business wasn’t firing his rockets, in fact he thought it was holding him back from a great career. Wannabe’s, they are a total pain in the neck!