Politalk.ca

Expected sadly.

Official reasoning: Amazon claimed the series was too "lore-heavy" for new audiences, a sentiment the show's writers strongly disputed, emphasizing that the project was designed to be accessible while respecting legacy canon (1:05-1:13, 2:00-2:13).
Studio politics: The cancellation is largely attributed to a "regime change" at the studio. The executives who originally championed the series left the company, and incoming leadership opted to abandon the project rather than retool it, fearing the risks associated with taking over another team's vision (4:48-5:05, 6:46-8:36).
Future of the franchise: Amazon still intends to develop the Stargate IP but plans to start from scratch with a completely new team and a "full-on" reboot, meaning fans likely won't see anything new for at least two to three years (8:56-9:14, 10:55-11:05).
Additional context:

The video highlights the irony of Amazon investing heavily in other franchises like Masters of the Universe and Warhammer (11:08-11:22) while discarding the Stargate project, which had garnered interest from classic cast members like Michael Shanks, David Hewlett, and Christopher Judge regarding potential returns (9:50-10:53).

So, they cancelled Stargate because Stargate viewers would watch it?

Nope, the execs that greenlighted it left and the new guys didn't want them to get the credit if it worked and they didn't want the blame if it failed so they killed it.