Google and facebook historically have never bought technology for the sake of technology.
They have the capability to build any technology they want. If they buy technology from you, who will maintain the code ? Everyone knows it is harder to maintain someone else's code if there is not enough Knowledge Transfer.
Both Google and facebook are always interested in buying people who come packaged with that technology.
In some cases the people will be users of that technology, in some cases the people will be the team that built the technology/business.
That said, there is no harm trying!