Seriously I want to make a shout out to Jagex. Yo, you all are amazing. I freakin LOVED RS back in the day. And selling runescape accounts and buy cheap runescape accounts now since you brought back it? I'm continuing to love every minute just like as if I was picking up from where I left off. You all rock @Runescape.
It's been forever, RuneScape. I miss you. But alas if I come back I will have to spend another month on all the new quests and whatnot to keep my Completionist's Cape.
A small development team is committed to Old School RuneScape currently. Making OSRS free to play would probably result in a significant drop in membership numbers and also profit as a result. Besides, it's basically the same fee it's always been to receive the membership benefits of OSRS.