What will happen? Absolutely nothing.
Bitcoin was meant to be decentralized and open this seems to be quite the opposite imo
And it still is, but that doesn't mean groups of people can form their own boys club. Let them have their secret meetings. It doesn't matter.
They are probably discussing developing the infrastructure further. Its a meeting of smart people. They are already making money with theiur existing ideas, and don't need a meeting just to make more.