Blame the ADA (Americans with Disabilities Act). I worked in a sign shop for 4 years, and I hated making ADA signage. So many rules concerning letter height, sign size, letter/sign contrast, etc etc. Also the fact that the store owner was too cheap to buy an automatic brailler, and we had to use one that was years old....you had to manually punch each bump on every ADA sign. It especially sucked when we would would be doing signs for new additions on hospitals....you're looking at 200+ ADA signs easily. God help you if you didn't put the ADA sign 5' off the floor and on the latch side of the door

.