You have no budget numbers or anything making your argument moot. You and everyone else knows that's a business isn't just created to make and sell a product, have a flatline growth or make no moves to expand and broaden its horizons.
I feel like Jagex has needed another source of revenue for a long time. They make all this content, and people stay subscribed. That's pretty much it. If they didn't release another update for a full year (some people might be happy about that, actually), many people would still stay subscribed to enjoy the already-existing content.
I hate it too, but I'd rather have a RuneScape full of rich players wearing fancy costumes than no RuneScape at all.
It's a completely false dichotomy. Firstly, under the old model, Jagex had two sources of revenue(at least); membership and advertising. Secondly, the Gowers, simply on the basis of the old model, managed to take what was essentially a throw-away hobby and turn it into a multi-millionaire enterprise, one of the most popular and longest running MMORPGS of all time. On this model, the Gowers were able to make hundreds of millions of pounds, for themselves alone. And we are to believe that this wasn't enough? I am sorry Jagex aren't billionaires. They were able to run on that model of only subscription and ad revenue for over 10 years, so it was certainly a sustainable model. That was when membership cost 5$, and they raised about 5 million dollars a month.
Since then, they have raised membership prices(I have no problem with this) and started the micro transactions. Jagex hardly needed another major source of revenue, and they certainly would not be out of business, or anywhere near there if they got rid of the recent string of stuff. It's simply a false dichotomy:give Jagex more money or the game goes under. Not true at all.
It was clearly obvious he was trying to simplify the explanation of how a business secures financial means to grow without cutting itself financially thin, stagnating and then going under. Business grow like trees where the bigger they get the more money it takes to run them. You can't honestly expect jagex as a business to keep running and grow from its previous revenue. If you considered the amount of people who felt jagex always rushed updates, made poor updates or oversimplified updates... Think about what investors might be able to do to remedy these plaguing issues we constantly face. Jagex just didn't roll belly up when investors came knocking... They had to open the door because they had something to offer to their studios. I do not believe that jagex let them in purely for the money because the people that work their ENJOY their jobs and the game they play. On the flip side the investors didn't come just to help bring a game to ruin. I am sure they are aware how the community feels about RWT and don't want to crash their investments and lose money.