Can't say I've had any cable issues with my Shimano 105 R7000 over 14,000 kms from new. I had the shop check it over recently and they said it was fine. Only housing they had to replace was the final loop going into the rear mech (which was cracked). From the electronic data on my other bike I average around 300 shifts per 50 km riding, so it gets plenty of use. My mtbs are lower mileage, but haven't replaced cables/housings in the last 3 years. I guess I'm really not too hard on my shifters!
We are all grown-ups and can figure out from our own riding experience how often our bikes actually require cable maintenance. I must admit I'm sold on electronic shifting at this point.