Acquaintance got the recognition at work for the tool implementation. They also got a vastly superior solution to a problem they had at work. I had another op

Acquaintance got the recognition at work for the tool implementation. They also got a vastly superior solution to a problem they had at work. I had another opportunity to develop a similar tool for another company, but the person who pitched it wanted 50% despite having nothing to offer other than the idea, so I politely declined.