Does the open sourced project gets adapted by some proprietary firms and after some years they make some changes and patent it.
since Linux desktop is not famous as Mac and M$, many people do not know anything about the features linux and open source offers.
e.g. Floating bars in LibreOffice writer were present in the then OOo V2.0. These were adapted by M$ Office 2007. Now what if they patent it?
Similarly, my friend was saying that windows 8 has Ubuntu lens like feature (not sure, as I have not checked win

.
So they copy / rob and then when someone claims the rights, they buy it, by offering big sum or by force. I am saying by force, bcos, I saw a show on discovery, which talked about evolution of internet and when talked about Netscape and IE (at that time M$ was busy with Win 95, so they were not concentrating on IE and they did not think net would make a big impact). The representative said that their marketing team is like mafia, they strike any kind of 1/2 million $ deal and they come to us and say, we want these features. Tech team cannot say anything to them and you have to listen to them by keeping your head down. They are like mafia, bcos you cannot go against them and have to follow what they want. The spokesperson was the lead dev of IE and they were simply copying what natscape was doing at that time and then when the war intensified, they bundled IE for free with win 98.
Before that they had meeting with Natscape founders and wanted to purchase the firm, but when they refused, Bill Gates wanted to break them. But then Natscape had secretly recorded all the meetings adn a day came when Bill Gates, who broke many laws at will was forced to answer questions which no one dared to ask him. Finally, the very strong dictator, was so mentally down that in a core meeting, he broke down (in 2000) and began to cry. from that day, his programming skills, which he was known for began to fade. After that he slowly pulled himself from active development.
This is what I remember was broadcasted in the show.