During my career, I’ve worked at various organizations that had different stances toward open source frameworks and tools. Some of these organizations absolutely did not want anything open source near their code base. Others had a small set of “blessed” open source frameworks we were allowed to use. Some of the better places I’ve encountered, had a process for approving and documenting the use of new open source libraries in the code base.
The reason for this is that organizations tend to recognize that using an open source library comes with a certain amount of risk. Their goal is to manage the amount of risk they are taking on while developing software. The risk of using an open source library usually stems from the license of the library.