Fortunately? lolWhat you want is that apps should be allowed to use as much resources as possible to get a task done as quickly as possible. Fortunately Apple has forbidden that in iOS.
Example #1: I'm at the airport and boarding soon. I decide I like the playlist or podcast I'm listing to and mark it to download on Spotify. I can't leave Spotify until its done downloading. Backing out to show my boarding pass, reply to a text or take a call will completely pause the download.
Example #2: Wednesday Season 2 releases on Netflix. I attempt to download it over wifi to watch later so I don't have to over cellular data. Will take up to an hour to download and can't leave the Netflix app or allow the screen to sleep otherwise it will stop.
Example #3: I'm at a job site and take a 10 minute video for my team to see the progress and need to upload it to Sharepoint. Video is 7.69GB and guess what...can't leave the OneDrive app otherwise the upload crawls to a stop then errors out.
Example #4: YouTube Premium has a feature where it will auto download subscribed content/recommendations you're likely to watch. But on iOS this only happens while using YouTube.
Example #5: Video call apps that don't support PIP or randomly has issues minimizing to PIP when you leave it pauses your camera until the app is back in focus.
I could go on and on. Yes I can accomplish these things on my business Android phone but my point is we praise and benchmark the hell out of every Apple chip only for iOS to under utilize it with single tasks.