I like open models for sure. I support free software as well. But using published knowledge to solve new problems was never disallowed, even for profit. Today, a for-profit company, e.g. a gigantic Big Pharma company can have their employees read chemistry and biology papers and use the knowledge gained from it to improve their products and processes and make more profit without paying a cent to the authors (beyond what they may get - likely nothing - due to the potential paywall).