[Question] How do ISPs connect you physically to their infrastructure

whatsup reddit,

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So i was wondering, how do ISPs connect the fiber/coaxial/copper line from your home or flat to their specific infrastructure? what i mean is that there are ofcourse competing ISPs, so when a resident or company switches ISPs, does an ISP let a worker comeover next to your flat/home and let him or her unplug the connection from the competing ISP's cabinet and connect it to their cabinet (i doubt this because of security), and also does it then mean that we a complicated HFC/PON infrastructure of the competing ISPs in a close proximity of eachtother under the grounds?

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while searching over the web i found some information about a process called LLU (local loop unbundeling) but it seems as if this is more aimed at ADSL..

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Any information being shared is highly appreciated!