To be clear I wasn't calling Linux a walled garden. But I was talking about overall trends. For example, there some are efforts to push Linux in this direction

To be clear I wasn't calling Linux a walled garden. But I was talking about overall trends. For example, there some are efforts to push Linux in this direction, most recently with some centralized app/package store. Also Linux Foundation was setup and is funded by big corporations like Microsoft, Google, etc in order to find ways to exert influence over Linux's growth.