Without Max and Bernie there probably wouldn't be an F1 as we know it; not sure if it would have been better or worse! But financially F1 appears to be in a much stronger position than most other sports.
Indeed.
It was only 24 years ago, during the usually fondly remembered BBC years, that we didn't even get qualifying live for most races, they cut away to cover other sports repeatedly and the commentary was often done over the telephone.
ITV, for all their critics (and I was one of their biggest in their later years when they dumbed everything down), did a huge amount in the early years, showing every qualifying session and race with much more pre and post-race coverage. Bernie had a big hand in that and it's the blue-print for most small screen F1 coverage still. Not that Bernie wasn't a pain and a dinosaur who saw little need in expanding in other ways (social media in particular as "it made no money") but he did do a heck of a lot of good that often gets brushed under the carpet.
As for Mosely I'm more mixed. Motorsport safety under him was very much reactive rather than proactive. Post Imola the changes were hastily thought through and circuits were altered dramatically, mostly temporarily to my relief.
Thankfully the approach to safety has mostly changed since Todt stepped up (eg head protection and ever-increasing survival cells and crash structure improvements), but something like virtual safety cars should have been in long before things like Bianchi's crash, and I still think Charlie Whiting should have been held to more account for there not being a safety car deployed with a car in the firing line with standing water causing aquaplaning (and previous instance of a near identical incident years before); it still makes me angry now. Driver's gloves (see Grosjean's injuries) are a small example that the FIA can still be naive.
That said, ultimately the FIA under his control did do a lot for safety not just in F1 but across motorsport and motoring in general, and while it was too late too often I suppose those who came later
can be thankful.
People also forget that they were both drivers and engineers themselves, Bernie a team owner too while Mosely ran the business affairs at March. They were very much motor-racing men before businessmen.
RIP Max.