They're not able to afford it. It's not WOW TBC Gold because they can't afford it. This has become a simple cash-grabbing game that involves more spoon feeding and handholding.
SOM will suffer the same fate as classic due to minor changes. The "first step" doesn't meet the standards of quality. It's feasible to make small changes which take just a few minutes which can lead to significant modifications. This could lead to an cheap WOW Classic TBC Gold unforgettable experience. The simple answer is that blizzard doesn't have ambition anymore. Therefore, the OP post about discontent is invented.