It's all about the data stupid
For years the mobile contracts would only advertise the number of call minutes and texts you got, you could barely find the amount of data you got, if any, and certainly not quality/speed (GPRS, EDGE etc.). When they did cotton on the still would never give you a decent amount of data without a ridiculous amount of call minutes and texts. I just wanted the data... but of course data was expensive and broke their money cow of SMS, up to 10p for 160 characters of text, per text!
The article was interesting but it forgot the absurdity of Apple's nano-SIM... phones got bigger, SIMs got smaller, everyone standardised on the micro-SIM.. except Apple. No good reason.