Its asymptotically unlikely that pitching hasn't gotten better. The growth in the talent pool has way outpaced MLB expansion. To break onto a 25 man roster today requires such a freakish level of talent, higher and higher along the bell curve, more and more standard deviations from the mean than ever. Consider, in 1930, 100% of MLB talent was farmed domestically (or very close to 100%). The pop. was 123 mil. Cut out blacks ( 12 mil) Jews (4.5) and the remaining white women (54m) and you're down to a 53 million-size population. I don't know how many of those played baseball, probably well under half, but assume its 100% of white Christian males for sake of argument. There were 16 MLB teams in 1930. Today the US is still the primary base of talent, and its added 100m males to the population. Add males from the Dominican (5), Venezuela (15), Cuba (5.5), Japan (63), and many other places. This is just back of the napkin math but the trend is clear: the population of talent has grown exponentially since 1930 while MLB has not even doubled in size. Therefore unless you can state a case against the population then or now being normally distributed, then MLB competition has gotten better also. In fact, there is a decent chance that the best player next year, the MVPs, will be the best of all time. And new ones the following year, etc.