I think that may the only job that could be safe for a given length of time. Eventually what you own will be superseded by something owned by someone else, and what you own will be worthless. If you are constantly investing in different products, markets and technologies you might stay ahead of it for a long time but that isn't what most people think of as a "safe job". I think what people are asking for in a "safe job" does not and will not exist.