The problem was never a shortage of numbers.
Every team we meet is drowning in dashboards and starving for a single figure they believe. GA4 says one thing, the ad platform says another, the finance export says a third. So the number stops being an answer and becomes an argument.
Once that happens, something quiet and expensive sets in. People stop deciding with data and start deciding around it, on instinct, on seniority, on whoever argues hardest. The dashboards keep updating. Nobody acts on them. The data is there; the trust is gone.
Unreliable measurement puts a ceiling on your decisions.
Here is the part most teams miss. Bad tracking does not just produce wrong answers you can spot and correct. It produces uncertain answers, and uncertainty is worse, because it is invisible. You cannot tell a number you should trust from one you shouldn't, so you discount all of them a little.
That discount is a tax on every decision your company makes. However good your marketers, analysts and product people are, the quality of their decisions is capped by the quality of the signal underneath. You cannot out-think a number you don't believe. Reliability is what lifts the ceiling.