Are you saying my revenue will be reduced to 10% (or 1%, yikes!) if I don't upgrade to the asics or are you assuming that from the moment one receives one it will take months to diminish any income?
I am saying your per GH revenue will most likely drop that much over the next months compared to now. Mining revenue per GH is directly and inversely proportional to difficulty which is proportional to the aggregate hashrate of the network. And the latter is about to explode when the various asics finally get to their customers over the next months.