Google is and remains primary a for profit company, which has to report to it's share holders. But they are better compared to others. They made large contribut

Google is and remains primary a for profit company, which has to report to it's share holders. But they are better compared to others. They made large contributions to open source, for example Android and Chromium. Neither of the two are generating direct revenue for Google. Also they choose to publish their map reduce, page rank and other algorithms, in the first place. I think if it were not for Google, there was no Hadoop. Also if Yahoo was the first to develop map reduce, I doubt they would have open sourced it either. My point is overall Google's existence is beneficial for the opensource and tech community in general.