Over 1.4 million clicks! Shooting 5fps in FX, it would take almost 80 hours standing on the shutter. Not sure if the shutter was ever replaced, but for that many clicks, it's still physically in really good condition.
Well, shutters are getting killed by dust getting into the camera and sitting on the sensible shutter curtains that are moved and collided at very high speeds.
The estimate of the rated shutter count is quite conservative, so cameras doing twice or three times the rated shutter count is not unusual. This is especially true if you never switch lenses, or dont switch lenses in dusty environments and keep the backside of your lenses squeaky clean.
On the other hand there is no guarantee that a shutter even survives its first use.
Once we have organic sensors with loss global shutters, mechanical shutters will be a thing of the past, anyway. As will be rolling shutter or the yello effect. Then cameras can take images until the electronics fail, and welldone electronics can last a very long time.
I was photographing an event as a volunteer when a local newspaper photographer came by.
At the end we were talking. I had a D300 and he had a D3. I asked him how many shots he thought he took a year. He said he had not thought about it since the camera belonged to the newspaper. Then he said he took about 600 to 800 shots a day on 10 to 12 assignments and 6 days a week usually. I figured that to be about 225,000 shots a year.
He said it got a new shutter every year or two and had a new motherboard or other major work most years. I imagine that D810 has been worked on several times, but is probably still worth fixing compared to buying a new one.