> There's probably less than a few thousand people on earth with the level of skill and expertise to build something at the scale of UE4 Thankfully, there are

> There's probably less than a few thousand people on earth with the level of skill and expertise to build something at the scale of UE4 Thankfully, there are millions of people who can build something at the scale of linux or firefox. Why else would it be possible for them to be open source?