I don't know about ExxonMobil but Walmart, UnitedHealth Group, and JPMorganChase employees do actively contribute to open source projects. Maybe just not the on

I don't know about ExxonMobil but Walmart, UnitedHealth Group, and JPMorganChase employees do actively contribute to open source projects. Maybe just not the ones you used. They have also published some of their own. https://github.com/walmartlabs https://github.com/walmartlabs https://github.com/Optum https://github.com/Optum https://github.com/jpmorganchase https://github.com/jpmorganchase