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2.5gbps is literally 2.5x times the speed of gigabit ethernet, so that's going to be very noticable even for most home users if they do any amount of LAN file sharing.

It's really just the cost that's the problem, because paying 4x to 5x or even 6x times the cost of gigabit hardware for a 2.5x times performance boost doesn't make a lot of sense.

If 2.5gbps peripheral hardware costs would come down I will happily bet they will take off.

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This assumes that the LAN is the bottleneck. Gigabit ethernet tops out at 120MB/s, which is about the speed of spinning rust on a NAS.

Yeah, but you probably have more than one drive RAID'd in that NAS so you will almost certainly get faster transfers (granted: sequential) if ethernet wasn't the bottleneck.

2.5gbps ethernet translates to roughly 250MB/s in real world transfer speeds, that's a lot. Literally over double real world gigabit transfer speeds, and far less likely to bottleneck you.

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