Muslims have conquered enough Buddhist lands. From Alexandria to Constantinople then, and from Bamiyan to Palmyra now, these Dark Age locusts swarm on and destroy the heritage of mankind.
Buddhism is an "old age" religion, just like Hinduism and Shintoism. The old age religions are not capable of competing with the Abrahamaic religions (Islam and Christianity). If they want to survive, then these old age religions need to innovate and adapt, just like Judaism and Sikhism. Else, they will continue to lose territory and followers to the Abrahamaic religions.
It's not me you need to convince of that assertion, it's some rather stubborn and famously resourceful folk in Asia's Buddha Belt, which ranges from Korea (North and South, neither of which are considered creampuffs), through China (commie and nationalist versions), and down into Vietnam, Thailand, Myanmar, and Cambodia. Plus the little Himalayan kingdoms. And then there is India (AKA The Elephant), home of the Buddha.
Good luck with that conversion process.
Buddhism is nowhere near as old as Hinduism, although it expands and builds upon some of the earlier polytheistic teachings. It is, in the wider gnostic sense, a monotheistic belief system. You can't get more monotheistic than "separateness is an illusion."
The Abrahamists look positively pagan in comparison, as they go on about fallen angels, Trinities, dualism, and all those other gaudy social control mechanisms.