I'm trying to understand what would prevent a 1 GbE non-optical slip-ring from transmitting 10GbE, 40GbE or even 100/200/400GbE. They all have 'metallic'/copper variants (backplane or short cable) and I can only find up to 1GbE industrial slip-rings in a quick market search.
I'm a slip-ring and 'cabling' noob, I don't have the right lexicon to start with... But if it is 'just' about losses, the slip ring size can't be much more than 7m (the limit on some of those copper modes) and can be reamplified/relayed at input/output of the slip-ring, right?
I'm missing something obvious but I don't know what.