To provide a scenario that takes this argument to its logical conclusion: if one person owned 100% of the only oil & gas company in the world, and all 8 billion people on earth used that oil & gas for their cars and their stoves, etc. and this in turn constituted the entirety of emissions that caused warming, then by this metric it would actually be that one businessperson who is "responsible" for all warming.
Even if that person doesn't consume any oil & gas themselves and lives off-grid on a farm somewhere.
To provide a scenario that takes this argument to its logical conclusion: if one person owned 100% of the only oil & gas company in the world, and all 8 billion people on earth used that oil & gas for their cars and their stoves, etc. and this in turn constituted the entirety of emissions that caused warming, then by this metric it would actually be that one businessperson who is "responsible" for all warming.
Even if that person doesn't consume any oil & gas themselves and lives off-grid on a farm somewhere.