Walled Garden
noun
A series of websites or digital devices that seek to maintain a user’s attention without a user needing to use another website or digital device. The largest tech companies have been known to build Walled Gardens.

“Google continuously works to keep users from clicking links to visit other websites via their search engine and favors YouTube videos over other video hosting websites.”

“Facebook favors videos natively uploaded to their platform over links to other video hosting websites.”

“Amazon’s walled garden includes a video service, electronic devices, and their own logistics/delivery services.”