Open caching doesn’t appear particularly open when it is exclusive to a single operator and a single streaming service, but that – unfortunately – is the nature of adoption in technology. This is what Verizon is doing with Disney+, in a trial to shift popular on-demand titles to the network edge to destress Verizon’s broadband network and improve end user QoE. It screams of paid prioritization, giving Disney+ an advantage over rivals when delivered via the Verizon wireline network, something consumer advocacy groups have fought hard to prevent. However, Verizon and Disney have both insisted that nobody is getting paid here, and therefore the partnership cannot be misconstrued as paid prioritization. This is all well and good, with Verizon assuring…