I think you need to read the articles and not just the headlines.
Eternals, Shang-Chi, and Black Widow were all profitable movies. They were flops for Marvel considering that the majority of its movies are huge blockbusters that come close to or surpass the $1b mark, but any other studio would have loved to have a "flop" like Shang-Chi. And considering that all 3 came out during the pandemic when movie attendance was severely depressed around the world, $400m is an amazing number. (For comparison, Godzilla vs Kong made approximately the same box office as these 3 films, had the same sized budget including marketing...and is considered a huge success.)
This explains what happens when you factor INFLATION in. https://screenrant.com/ant-man-wasp-quantumania-box-office-m...
I don't understand what you're trying to say with this reference? At any rate, The Incredible Hulk predates the Disney acquisition of Marvel (TIH was released by Universal) and is the last Marvel film not to make a profit at the box office.