I started buying Copain wines around 1999-2000. After a recent email exchange with the tasting room there I wondered if I've ever seen a winery change so drastically. I still have an email exchange with Wells Guthrie from @ 2005 getting his advice on using foils on my bottles vs the "don't bother us make an appointment through the website", reply I got this week. The changes around 2008 I understood. The raise in single vineyard prices and the introduction of lower cost blends was a survival strategy of those times. I did stop my regular purchases, it was the single vineyard Rhones I really wanted and they became too expensive for me. The introduction of Pinot Noir and 'Chasing Sideways', I understood that also. I didn't like it but I understood it.
I know Wells is gone now, and the winery was sold to K.J., but really almost nothing of what it was from a culture, style and personality perspective remains that I can tell. I've had other favorites go through ownership changes, Betz comes to mind, and retain the culture and personality of the winery. Ridge has changed ownership structures a few times and gone through a lot of changes in the last 20 years but I've never felt like it wasn't Ridge or didn't have the spirit of Ridge. Just last month a csr at Ridge tracked down a 2008 Chardonnay for me to replace a corked bottle. I had no expectation of getting the same vintage, but he found one, held it until the weather was good and sent a replacement, emailing me through the entire process with updates - a very Ridge thing to do.
How about everyone else? Any that changed for better or worse you can call out?