Micro bass amps as a "mainstream" product is still a relatively new technology in the larger scope of things. Maybe it will come down to traditional amps will be only a the far end of the spectrum, IE: entry level low dollar stuff or perhaps branded as "pro level touring gear." Genz Benz still offers the full size GBE 750 & GBE 1200 and they are by no means cheap in build quality and still maintain their price slot (which is definitely not entry level $$)
How many people can say they have had a micro head for 10+ years with never a hick up?
I've had mine about 2 1/2 years and so far so good ( knocks wood

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