Elon Musk said in an interview that humanity has achieved the best it can with reaction engines, that something else is needed for further space travel. He said there is need for a revolutionary propulsion system which would allow people to reach beyond Mars. So this is a way to analyze all options how an inventor could make such a new propulsion system most profitable. Hypothetically, let's asume there is such a propulsion system which we could call a Dynamic Electro-kinetic Accelerator and Impulse Reactor (short DEKAIR). The input is electricity, the output is motion, it is a closed system and does not need fluids like the https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive or most other https://en.wikipedia.org/wiki/Electrokinetic_phenomena. This invention would certainy affect air, space and maritime transportation, and possibly leave some companies out of their business. This risk has to be considered when trying to either sell the idea or develop it with some existing companies in air and space transport, as well as military companies producing submarines, destroyers and aircraft carriers. Let's first describe the propulsion system benefits. In its initial stage in atmospheric conditions, it shows over twenty times more efficiency than any actual rotary electric motor using reaction for propulsion. A 100kg DEKAIR can provide a constant 1.1G to 1.6G acceleration without heating issues because it has no internal physical friction, yet does heat up over time (hence the 1.6G limitation). Second, there are problems in making the DEKAIR profitable. If disclosed to the public, it could soon be made/copied in China, Russia and other parts of the world where intellectual property is a problem. Even in the West, this could affect most gas turbine and rocket propulsion companies (aircraft, spacecraft, ships and submarines) so it may be wise to keep a low profile with this propulsion system. I asked some engineers, and got interesting thoughts. One engineer suggested this invention be better kept secret. He said the best would be to contact a good patent attorney who would offer the rights to aircraft engine companies like GE, RR and PW because it would impact their economy. He is sure that they would rather pay money so that this invention DOES NOT get produced, giving them time to adjust their market and get an edge on the future competition. Another engineer said that Elon Musk would certainly be interested, but the payment would still be a problem because large companies often see lawsuits as a cheaper option than paying money to the inventor that was agreed in a contract. Asuring payment is the biggest problem. A DEKAIR could be used for military supremacy so there is risk the inventor could be left with nothing if a government seizes it. The DEKAIR does not need air (as aircraft do) or water ducts (as submarines do) for propulsion and has no heat signature because it can be installed internally close to or within the CG. Hence the person or institution which would buy the rights for this invention would certainly be under national security supervision of any country in the world. If the inventor is from the EU, how could this be sold in the US? In other words, this is just a mental exercise trying to find some answers. Or, if questions are preferred: "What would you do if you would be approached by an inventor asking how to make an invention most profitable if it has a technological edge over other aircraft and spacecraft propulsion systems?" "What would you do if you were the inventor, what options would you find to make the DEKAIR most profitable and leave yourself some room for further improvement of this propulsion system?"