How common is it for data at an established company to be a complete disaster?

I am a data analyst, considering furthering my education to work in data science. I currently work for a very well established company that has absolutely atrocious data due to poor IT infrastructure. For example, a visitor will click a tab on their website but due to site latency, the click will be recorded 18 times. I spend all day controlling for messes like this on the reporting side, instead of doing actual real analysis, because the company will not …

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