Most, if not all opensource projects should utilize #Bitcoin as a payment method. Those that never pay money wont care, those that already do have another option and those that coupdnt maybe can then.
It also protects them from the misuse of the dollar. There are many reasons the big companies like microsoft and google are big, like: the dollar (or any fiat) economy where the government invests newly created money in corporations they like.
They surely favor facebook, Microsoft or Google over Linux and etc, giving those corporations an unfair benefit, in return for them to be compliant.
Bitcoin solves this.