1 - coffee is not a placebo, caffeine is one of few ergogenic aids that's been often proven to have real benefits via double blind trials. 2 - if you legalize

1 - coffee is not a placebo, caffeine is one of few ergogenic aids that's been often proven to have real benefits via double blind trials. 2 - if you legalize drugs then you require drugs (of anybody who wants to be competitive). Literally all professional cyclists use all the drugs they're allowed, and some they are not. On terms of caffeine this takes the form of a megadose towards the end of a race delivered via a "finishing bottle", which is a melange of caffeine, sugar, and painkillers.