Radom
At 200 9mm cartridges per month, it would take a little over 33 years to fire 80,000 cartridges in a single pistol. In my experience, no one shoots like that. I think the CZ pistols could probably handle it with standard 9mm loads, but people shooting that regularly aren't going to stick with one handgun for 33 years. Also, common sense tells me it wouldn't group as well as it did at 20,000 cartridges fired.
I don't shoot near as much as several competitors I know do. My 75B at 60K rds could still reliably bounce 12 gage hulls on the 27 yrd berm. Not very scientific, but real empirical data.
If I can keep shooting at my present rate, my 75 Shadow should see 80K at age 5yrs, 6 months--in 4 1/2 years. I'm actually shooting this pistol a little more than I cited each month over the last year. I'll periodically update the rd count. 
P.S
My High Standard .22, I'll never really know the round count; but since the 1970's I'm shooting it a lot less now last century. It's still spot on at 27 yards.
My Sig P239 doesn't get the high round counts, so it and the H.S. will be inherrited by my son to try to wear them out--or maybe my granddaughter--or future great grand child.
I am sure that familiarity with the pistol(s) cancels out the slight degradation of the bore(s) for most people. The empirical evidence on CZs provided by CZ-UB suggests that the bore will start degrading at some point after @ 12,000 cartridges fired. According to CZ-UB, this is significantly higher on the newer models. To be fair, the information published by Pazdera & Skramoussky doesn't specify which loading(s) were used, either.
My interpretation of the anecdotal evidence provided by people I trust is that they don't notice much degradation of the bores. Additionally, I haven't noticed it either, but I am probably just under 10,000 9mm cartridges fired on my most heavily-used CZ pistol.
FWIW, the initial increase in dispersion was only @10-20mm at 25m when fired from a mechanical rest after 12,000 cartridges fired. See p. 46, Prazdera & Skramoussky,
CZ 75: The Birth of a Legend (CZ-UB, 2005).
Changing the recoil springs is not as clear-cut as it once was. You pretty much had to do this for function reasons with the Czech springs. You ran into other problems with the Wolff springs that were available @11-13 years ago. For example, people tended to "overspring" the CZs, which was also hard on the pistol when the recoil spring returned the slide into battery with too heavy/long a spring. If you cut/trimmed the Wolff springs intended for Tanfoglios, they also tended to wear prematurely in a CZ.
Again, I'm not questioning the honesty/integrity of people having good results with these pistols over time with high round counts. I do believe they are getting these results with more or less "ideal" conditions: newer-production pistols, relatively lighter loads, better springs, etc. On the bright side, someone buying a CZ today has access to a better pistol made with better parts, more information and collective experience (both from the shooting community and the manufacturer itself), and more accessories actually designed for the current models.
To sum up, the only "hard data" provided by the actual manufacturer isn't specific about a round count anywhere near 80,000 cartridges fired. To be fair, no manufacturer is going to commit to a number a number that high, period.
