Hmm, interesting strategy to punish latecomers. Also no discount or benefit offered to existing subscribers, there's an incentive there for people who sign up early for the RWC but no incentive for those already handing over $180 over the course of the F1 season.
I hope the PL isn't offered on a separate pay-per-view basis next season, but suspect it will be. A season of F1 + a September sign up to the RWC clocks in at $270, chuck an extra $20 p/m on there for the EPL from August thru May and you're talking $450.