Many of the remakes make the mistake of trying to appeal to a too broad of target audience instead of the original fan-base through dumbing story telling so anyone could follow the plot, lots of CGI for action movie fans like the Transformer movies and trying to diversify like the female ghost buster cast and weak non-offensive jokes.
At least for Disney remaking movies is easy money as they don't risk it with new IP but will be needed to advance movie entertainment.