I find it quite surprising how many companies don't invest enough in having a certain maturity in terms of web analytics, despite they heavily invested in CRM,

I find it quite surprising how many companies don't invest enough in having a certain maturity in terms of web analytics, despite they heavily invested in CRM, machine learning and other fields. Ad-blockers are still not considered a fact in data gathering nor in QA or, in the best case, just a minor singularity. Despite different sources agree on a +30% of usage, at least in Europe, they're still ignored. Still many business decisions are based on solutions like GA. If decisions were to be taken on any other source, let's say polls, marketing studies, etc., after being warned of a 30% of uncertainty, people would be very reluctant to choose A over B. This is not the case for web analytics, it seems. Now technology has evolved and any medium size company should harvest their own data (yes, stop giving away some of your most valuable data to third parties, please!).