with old fucking games why does dlc price never go down?

shogun 2 was released in 2011 for fucks sake.
but no that 'dlc' will be another $50 thanks. waht the fuck is that? it was already a crime 10 years ago when one of the 'dlc factions' was already in the game but they want me to still pay $10 for it a decade later? games are such cancer