Common since

Longevity is a good thing, particularly if you own a business. It shows you are doing something right year after year. As a kid I was always impressed when I saw a business advertising that it had been around "since 1948".

But as I get older I am less impressed. Particularly if I have been around longer than that business. If I see a business boasting that it's served "great food since 1982" I tend to laugh. 1982? I remember that year. To me it doesn't seem that long ago.

I write this after reading an ad for a photographic exhibit that spans the "photographer's entire professional career (from 1991 to this year)".
1991? I've been taking pictures (for free) since before that time. I guess it might be impressive to someone who's under 18. But then, someone under 18 might be amazed that they even had cameras in 1991.

I know running a business is tough. Most small businesses fail, which is a shame. I applaud those who have tried.
I wonder if there is some sort of scale to measure the length a business has been around vs. the difficulty of running that business.
We've come to measure a dog's life in this way, comparing it to our own life span.
Maybe we need to come up with the business equivalent of dog years?