Why not? But that entire depends on that particular country's legal structure on bitcoin. If bitcoin is legalize in a country then many private companies will be interested to install bitcoin ATMs. However, alone bitcoin can't make an ATM business successful. So it will be a good idea to incorporate other successful crypto currencies in ATM system. So that people can buy and sell altcoins using an ATM. Only bitcoin ATM doesn't look like a profitable idea but an altcoin ATM can be.