I don't think Philip will make that much, When i charged 1000 for a subscription fee, i got next to no fans, and I'm pretty sure that at season update it will be the same, if the price is too high, the fans won't pay.
I'd been charging 100 for a subscription and make 2-3mil a week (regular top 4, and always on the podium with 1 car), and dropped it to 50 for last week, and made more than the weeks beforehand.
If they all resubscribed for next season, I'd make 16.7mil (which will all go towards my works contracts).