You can sell or give away the right to develop the land. Similar to HoAs you can restrict the usage of your land and as long as someone else holds the keys to

You can sell or give away the right to develop the land. Similar to HoAs you can restrict the usage of your land and as long as someone else holds the keys to unlocking that usage it will survive bankruptcy. The title would retain the restrictions. It needs to be an entity due to no rules from private entities lasting forever, by making some entity control the release it isn't you deciding to persist but them. It isn't foolproof of course but avoids the simplest failure modes.