

Often common stock implies the existence of preferred stock, i.e. the investors got paid out in low sale and everyone else had no money available. The increasingly dominant private equity corp biz probably got a great deal. The class divide widens as usual
Well the old clients are backward compatible, but you should check if your client can use new features. But mostly it’s that you have to be on a server that supports it
https://ircv3.net/software/clients