“It seems there was an insufficient number of users interested in forking out in-app for those stronger chisels”
Not really.
The chisels and other power-ups can only be purchased with the coins earned in-game. Trouble is, the app was only rarely able to connect, has consistency issues that mean earned coins often disappear, has a glaring UI bug in the unavoidable bloody Facebook button causing a white screen of death, and is, in in the case of the Android version, so crushingly laggy that it is difficult to build up enough coins to purchase anything other than the most basic of upgrade items.
The in-app purchases that may have provided Lolyneux with the cash money he desires have yet to be enabled, so anyone who wanted to help fund this mad experiment, couldn’t.
There is an intriguing element to this whole thing that would be more evident if it worked properly. 22 Cans must hope that people don’t just get bored and wander off before they get it sorted.