This can result in some quite odd outcomes. The road outside my house, for example, isn't owned by the local council like most roads, but is 'unadopted'. It's probably owned by the descendents of the builder who laid out the road and built the houses in the 1840s, but as it would be a liability rather than an asset (and was probably forgotten about shortly after the last house was sold in any case) nobody knows who that is.
There are ways around this. We have specialised title insurance to cover the risk that the road isn't actually a right of way, and there are provisions in English & Welsh law that give responsibility for road maintenance to the frontagers (like me) if the road owner isn't known. But it's added a surprising amount of friction. If there were a 'register or lose it' provision then it's likely something sane could be worked out once the land reverted to the crown. But as it is, we're in this weird semi-purgatory forever. No way of claiming adverse possession over a road, sadly...