Comment by antirez

Unfortunately I've no good answer for your question, since I'm sponsored by Pivotal, but if we consider the percentage of open source software created, only a small percentage is sponsored. Many developers simply do it for free, as I did it in the first year of Redis developments, because I had an alternative stream of money to pay the bills. So, my point of view, is that the IT ecosystem is broken and IT companies are leveraging a huge value from OSS without providing enough back to pay developments of more OSS. It is one of the biggest injustices currently happening in the "rich world", but there is no easy fix.