With all due respect to Pete, the result of his poll was an average temperature across the board:D.
For Dirty, in the USSR, there was only one type of chess with a 2.5-hour control for 40 moves in all official competitions (worldwide), after which the move was recorded, and the game continued the next day. Currently, there are normal chess, rapid chess, and blitz chess. These are 3 different types of chess, but all chess players can play them reasonably well.
But this control was not constant; it evolved along with chess. Usually, it evolved towards reducing the time per game.
The poll was created to determine this "default" control. In specific games and tournaments, it can be increased or decreased.