By Hollywood, people here mean the big studios/distributors, that is, the companies who provide the cash, not the production companies that film the stuff.
Through a system of billing specifically set up to make the production company end up deep in the red while the big "studio" rakes in the profits. AKA Hollywood accounting.
The system is rotten to the core, and copyright as a concept has been broken since the day someone could drop a couple of 100s on the table and walk out the door with the digital equivalent of a printing press.
Copyright basically hinges on the act of copying being a laborious process, involving large machinery and man-hours.
This because such requirements make all acts of copying for profit activities, to recoup the costs of the copying.
But when producing one additional copy is a case of ctrl-c ctrl-v, calculating the cost heads into "angels on the head of a pin" territory.
Copyright died the year that xerox machines got installed in public and college libraries. Everything since then has been attempts to unring a bell, and maybe stuff a genie back into a lamp.
People forget or don't know that Hollywood is the Silicon Valley of films. You need a special effect? There's a guy down the street who can do that. You need a special lens or lighting? You can rent that, today, for a hundred bucks at the shop around the corner.
That's why films, and the people who make them, congregate in Hollywood.
The guy down the street is not a big studio/distributor providing the cash. As I said, people aren't talking about Hollywood-the-place. It's a metonym, like "Wall Street" and "Fleet Street", and in this case it's specifically about a few companies (mainly the MPAA members).
Can we consider Game of Thrones to be the most popular tv show currently?
From the wiki:
>Filmed in a Belfast studio and on location elsewhere in Northern Ireland, Croatia, Iceland, Morocco, Spain, Malta, Scotland, and the United States,
So it does not come from Hollywood. HBO is owned by Time Werner, but operate independently. So neither the physical production place nor the company that made it screams hollywood.
As for the Netflix only stuff, it is owned by Netflix.
Filmed on location doesn't mean not from Hollywood. Hollywood isn't just the actual physical sets in LA, it's the entire industry.
HoC, GoT, all come from Hollywood. Heck, even GRRM was a screenwriter for Hollywood. The creators of GoT are also from Hollywood (Troy, Kite Runner, the awful X-Men Origins: Wolverine, etc.) and the show is run by Warner-owned HBO.
the hobbit was filmed on new Zealand... by Hollywood. who gave NZ a new thematic airport (it's like entering the shire) and in exchange for the airport and the movie production taxes got the head of kim dotcom on a tray.