[dhuk_2018]

While I'm not disagreeing, according to WikiPedia the amount of 100LL sold per year is 0.14% of that of MoGas (2008). https://en.wikipedia.org/wiki/Avgas#Consumption Shell, Exxon, etc. probably see AvGas as a pain.

[GekkePrutser]

They do indeed. A lot of gas providers at airports here in Europe don't even want to bother stocking it anymore.