cunctatorg: <@Grega>; my observation is that this fighting spirit has never died!
During fifties, sixties and seventies it was more rare but grandmasters like Mikhail Tal, Victor Korchnoi, Dragoljub Velimirovic, Anthony Miles, many others and of course RJF provided a strongest testimony that this fighting spirit was alive!
During eighties and nineties Garry Kasparov's influence and the Kasparov school had essentially revitalized that spirit, not to mention the crushing battles between Garry Kasparov himself and Anatoly Karpov!! Other players who had followed that path -and even their own course- were Alexander Beliavsky, Alexei Shirov, Alexander Khalifman and Ivan Sokolov but (to be honest) there were many great fights "back" then! 'Back" because eighties and nineties (and even seventies) are like yesterday to me!!...
Nowadays there is a lot of great fighting games but there is also a (relative) obstruction: the strongest chess software plus the very strong contemporary PCs wiped out "the art of chess analysis" in game adjournments (which are now just a past) and also in chess openings and even chess endings... Therefore our chances to watch a game between grandmasters with a <really> fighting opening are minimal, probably all the probable opening fireworks will be a result of PC analysis.
The only gain from this development is that almost every supergrandmaster should be able to have a great team of three of four (?!?) silicon analysts of a chess strength (much) more than a 3,000 ELO, therefore it's up to him, his working ability and his devotion to have profits from the work of his silicon assistants... That's an element of "democratization" because "back then" only Soviet participants had the privilege of a greatest assisting team ... and Bobby Fischer by himself!!
Anyways...; despite these sad and positive observations the really positive thing is that there are nowadays many greatest chess battles from Super-Grand-masters all over the world!... Soon the PCs influence will reach the limits of perception of the SGMs and hopefully we will see once more chess similar to that of the good old times but <mostly> ... after the opening!!