The OP started this thread with a question that just begs for a yes or no answer. Obviously, one cannot be provided because the very definition of "sport" has such fluid boundaries. If sport is competetive, then fly fishing is not a sport. If sport requires superb physical conditioning, then bowling and curling are probably out.
Perhaps a better way to phrase the question would be "What has chess got in common with more mainstream sports?" Then, of course, you have: rules, competetiveness, national and international governing bodies, training, fans, amateurs and professionals, etc.
"What has chess NOT got in common with more mainstream sports?" Broken bones, lost teeth, torn ligaments, sweat, strength, agility, hand/eye coordination, careers ended by old age at 30, multi-million dollar contracts, supermodel spouses, and fans who paint their faces with in checkered patterns and throw beer on each other for rooting for the other guy.
who knows ?
could be some time in the future, there will be an Olympic champion web browser.
or a world champion "sneezer"!! and chess flexes more muscles!!!