Once they're done with FTTC Openreach's cabinet count is only going one way and it's not up. Once Ofcom's fixation with LLU is done and they can retire copper Openreach can and likely will be expected to decommission street furniture entirely.
You guys have seen the mess in my current area with a single photo able to take in 2 x Huawei 288s, PCP with Gfast pod and stand-off shell, Virgin MSAN, Virgin power and nodal cabinet and 2 x large VM distribution cabinets.
Do love the people who complain about pole-mounted infrastructure being 'third world'.