Looking to the future I agree with a PP that their ability to succeed as producers is much harder now than it was when they first started.
If you are an author or screenwriter looking to find a production company to green light a movie/tv series adaptation of your work who are you going to turn to?
If it's great then you will likely have many options on the table. Do you go with a company with a great track history or H&M who to date have specialised in monitizing their own family connections - to variable critical response? Furthermore whose original content has either been scraped (pearl) or not recommissioned (archetypes) after being critically panned.
That leaves H&M looking at content other, more credible producers have probably turned down. That's not to say they might be lucky to pick up a diamond in the rough - but it's going to be more difficult to find.
Prior to their previous work and (fairly or not) getting a reputation of being "grifters" who are simultaneously difficult to work with and work shy then you could understand people taking a punt on them because their "status" was definitely a bonus from a PR/Promotional perspective.
Now - maybe not so much unless H&M outbid the competition (to a significant extent) to buy the rights - making the proposition for Archwell even more risky re: financial return, especially for novices in the field.
The next problem I doubt they have considered is even acquiring the rights, will they be able to pull in the big names? I see the Obamas latest venture stars Julia Roberts, Kevin Bacon and Ethan Hawke.
I doubt H&M are in the same position to "make a call" to actors at that level and frankly if they want to court the British A List contingent they might want to consider how many of those secretly harbour a knighthood/damehood from Harry's Dad or Brother at some time in the future - truly the waves can run much wider and in directions you didn't intend when you throw your rock into the water.