There was communal ownership of those lands for tens of thousands of years before the process of statism was used to take them for private use via the process of enclosure in the 16th and 17th century. This is a matter of historical fact.
I didn't refer to feudalism specifically in any of my statements but yes, it was the beginning of a process of the ruling class taking the people's ancestral, commonly held land that occurred for a few hundred years, and which later developed into capitalism. If you are suggesting the aristocracy was in complete control the whole time I suggest you review your history. Their control was sporadic at best and individuals actually had more individual freedom than they do today in many respects, due to their rights to the common land. For example a peasant could build a cottage on any unused common land until 1588.
Feudalism was never fully successful, it was extremely unstable and the political tides shifted constantly as the families of the ruling class fought for dominance and it wasn't until the 16th and 17th centuries that feudalism's direct descendent, capitalism, succeeded in removing the last of the people's right to millions of commonly owned acres in the British Isles. And despite their best efforts some commonly held land still exists in the UK, although the commoners mostly no longer find it worth it to exercise their traditional rights and have moved to urban areas.