Re: Downey's last?
Maybe he doesn't want to be locked into a 3-picture deal or whatever and would like to just take them one at a time from now on without necessary obligation to do more than that.
2015 will not only see the MCU beat the HP franchise for the #1 WW spot but it will also see Marvel Studios pass Pixar in terms of WW grosses($8.585 billion). Marvel Studios/MCU avg. annual profit: $621m(there ain't none higher. HP was the closest runner up with $541m when it was active).