My understanding is that this has been solved, however, it tends to cost more to run enough line to ensure equal pressure no matter how many taps are open. This will also deliver water at a much more consistent and easily controlled temperature. Now, I could be wrong, maybe this just fits my narrative that profiteering is the bane of us ALL. More like we need ethics and established, acceptable margins that don't destroy communities as they enrich CEO's and the like beyond all imagination ... However, I'm pretty sure I saw "Holmes on Homes" going over this issue.
Indeed, @builderofcastles & @sigmajin know what's up, but I thought I'd chime in with some VIDEO'S!!! :-D
Here's another piece that addresses long hot water lines and may also offer other insight. I'm a hands on learner, visual is a step closer, RTFM - not so much. I'll do it, sure, but then hands on to cement.