Has ARM in the data centre missed the opportunity to shine?

For the last few years we have been hearing from the likes of Qualcomm how multi core 64bit ARM processors were going to revolutionise the server marker which has been dominated by Intel for decades. But we have seen this before with AMD offering server processors at a lower price than the Intel equivalent but their percentage of the market remains in the single digits and the AMD chips are X86 so more supported by the OS and application developers. where ARM chips could come in useful in the data centre is in the VPS market where one physical server can host many virtual servers. Many of these VPS are running relatively low powered services such as website hosting which would run well on the lower power of the ARM CPUs.