The Soviet Union was an exception, but even there chess players were not rich. Only Fischer changed that.
The best indicator of a Chess Player's form is his ability to sense the Climax of the game.
I don't play in tournaments, but I follow some.
I think that the World Champion should try to defend the quality of play more than anyone else.
Nowadays the dynamic element is more important in chess - players more often sacrifice material to obtain dynamic compensation.
Nowadays there is more dynamism in chess, modern players like to take the initiative. Usually they are poor defenders though.
Time control directly influences the quality of play.
My forte was the middlegame. I had a good feeling for the critical moments of the play. This undoubtedly compensated for my lack of opening preparation and, possibly, not altogether perfect play in the endgame. In my games things often did not reach the endgame!
When you play Bobby, it is not a question if you win or lose. It is a question if you survive.
When I played Bobby Fischer, my opponent fought against organizations - the television producers and the match organizers. But he never fought against me personally. I lost to Bobby before the match because he was already stronger than I. He won normally.