To minimize these risks - the block reward should have been constant, or reduced gradually,
a little bit each block. People are less likely to notice, protest, and organize
against a gradual change. That is how governments become increasing large and oppressive,
fiat currencies become increasingly worthless, etc.
Hindsight being 20/20 and all but this is something I brought up in the past. A continual decaying function would have been useful for determining block reward. One would think some alt-coin would try it out but it seems alt-coins exist solely to be pump and dump junk.