There's no such thing as "digital revenue" - all this money comes from the real economy.

thats what the bitcoin detractors said, didnt work out to well for them did it?

and anyway, even if you limit it to "real economy" (if anything in cyberspace can really be counted as real, which is highly suspect) it comes from ad revenue. all taxing eu ad revenue in cyberspace will do is ensure eu companies cant competitively show their ads in cyberspace, doing so will lose the eu a lot more than just "tax".

Ad spending ultimately comes from sales revenue from physical goods and services and is intended to drive those sales.

and the required tax is paid on those physical good and services. nothing to do with google or 0s and 1s.