Cryptonote is holding out, but also has a threshold. Hell, if you can do it with a computer, made of silicon, of course you can do it with special-purpose silicon !
Monero will be fully mined in 2018, then having a forever reducing inflation in money supply called the tail of emission. At the moment, it makes little economic sense to invest in the design and manufacture of specialised silicon for Monero. Bitcoin on the other hand will not be fully mined until around 2140, so the economic sense of producing specialised silicon exists.