We should be on 3rd or 4th generation asic scrypt miners by then which maybe means you'll be able to get a $20 usb stick that makes you 10k coins a month with a single kilowatt of power per month.
But when everyone has a $20 USB stick capable of mining 10k coins a month on today's difficulty, that difficulty will go up dramatically. Mining will always be expensive to everyone but those with early access to next generation hardware.
That's not how mining works. More miners = higher difficulty = lower rewards. Plus 4th gen ASIC scrypt in 2015 when there's only one now and no more coming for many months? Unlikely.
We should be on 3rd or 4th generation asic scrypt miners by then which maybe means you'll be able to get a $20 usb stick that makes you 10k coins a month with a single kilowatt of power per month.