content: space I'll give you about 4x for a normal drive to a normal SSD that said you can buy an SSD that is 4TB or a normal drive that is 12TB (just looking at the options easily available on newegg) so 4x the space 3x the capacity, there is a loss there but not what some would make you think. Temp yes that is an issue to address and not one I was thinking about, I was just looking at density. These big companies can afford them, as long as someone is making them. But if there is not competition on them and a single source with low volume of sales the price is going to be high and stay there or they will stop and spend the time producing more drives rather then retooling for a run of specialty drives. Performance would be the big decider on if the companies keep buying them, if they can get equal or better performance from traditional SSDs for less money they will be considering them instead. Only when it comes to a point where it is condense or build a new data center would this come into play, even then drive capacity keeps changing so it is possible to just update some of the older servers to solve the issue. Energy use yes a SSD is going to win but will a server full of these beat the same amount of storage in traditional SSDs? what is the cost difference? Overall if I was the one in charge of buying the servers I would consider what is going to be a lasting feature vs a gimick for a year or two and then impossible to upgrade/repair.