So in terms of what an SSD can do for a console, what advantage does it have over a regular HDD? For a Bluray drive in a PS3, it's about 2x speed drive at 72 Mbps. The best SSD that doesn't break the $500 limit (which would be around $100-$150 in 3 or 4 years) does around 250 Mbps. But as it's been said already, games are only to get bigger the next generation (going from the average 7-14GBs to well over 20 GBs). Let's say Sony decides to go with a 1 TB SDD and the average game is 25 GBs. That's 36-39 games you can fit on that hard drive. Not only does the SSD have an advantage in read/write speeds (almost eliminating load times), but it can withstand up to 1500 G's? The only problem is THE COST and the amount of space needed. Obviously I cannot see into the future, nor can I guess the prices.
What I do know is that a 1 TB SDD right NOW... is well over $4,000
. Can a $4,000 piece of technology (one piece that should very well NOT be the most expensive part of the console) really lower down to the price that will make it viable in the PS4(anywhere from $150-$250) in the next 3 or 4 years?
So why don't we go a step or two down to 500 GBs SSD. That's still 16-19 games that can be put on that SSD. Once again, the current price tag of an SSD of that is well over $1000. Will the price go down that drastically in the next 3 or 4 years? I don't know.
My point is, there are a ton of advantages of using SSD in a console. Those advantages cost way too much money while still needing to have enough money left over to design the really important parts of future proofing a console for 5-10 years (such as CPU, GPU, memory). Will having an SSD be great? Yeah, no more load times. But I'm not paying over $1000 just for a console that has an SSD (which is what it will probably cost us, the consumer).