From my experience in the digital health sector, concerns for privacy is always the reason given for not sharing anything valuable and/or useful to others. But it's just a convenient way of hiding the 'desire of commercialisation'.
while it's not great for science at large, i don't blame them either.
For example, ImageNet for machine learning is a very expensive and difficult data set to produce that has resulted in revolutionary advances in machine learning. And people build models on it, cite their results as evidence their models are good, and cite the paper.