In almost all cases, the support of these giant corporations is towards feature-sets that are inherently self-serving. In many cases, they wield too much power and hijack the direction of the opensource projects. For example, there's plenty of optimizations for server-side CPU performance on Linux, often to the detriment of desktop interactive performance (see Con Kolivas' scheduler and his 10+ year long struggle).

> does not mean that open source does not immensely profited and thrived from capitalism

It certainly did not.