Samsung doesn't have a locked in ecosystem. You can buy another brand of phone and transfer all of your apps and data. There are a few samsung apps that might not work, but if you have bought in to the apple ecosystem you're going to pay a hefty price to switch.
I take your point but it’s not exactly the point I’m arguing though. I’m simply saying that following the logic outlined, Samsung’s significant global presence and its control over things like fabs and OLED manufacturing, it would present more of a concern than Apple.
I then highlighted that if market share is a primary concern, as well as vendor-specific features (“lock in” features), then in the PC space we should be raising concern about Nvidia’s dominance in the GPU market.
The narrative of the anti-Apple crowd here is one of dishing out punishment to Apple because of their successful products. iMessage is popular because it’s incredibly easy to use, secure, and basically invisible to the casual user. Same with FaceTime, AirPods, Watch, AirTags, iPad, Apple Pencil, HomePod mini, iCloud Photos… the list goes on. In each case Apple provided a better solution than the competition — in some cases it introduced a new product — and one that was easy for the vast majority of people. They ought to be rewarded for that, not punished.
Just because Google can’t figure out what to do with messages, video calls, wearables or tablets, doesn’t mean that Apple should be shackled or punished for pushing out a good solution.
Also, Apple isn’t infallible: look at how it still struggles with Apple TV and the commercial failure of the first gen HomePod. The former has minuscule market share, and the latter was so over engineered that it offered features that most people didn’t care for. Heck, I would bet that most iPhone users would avoid the Apple TV for their home entertainment system — something that would be infeasible if they were an actual monopoly or had strict ecosystem lock-in.