Don't forget about Russia:
Using aluminum-magnesium alloy 1580 is much cheaper than aluminum-lithium from SpaceX for Falcon 9 launch vehicles. However, domestic products made from alloy 1580 are larger and heavier than those produced by Elon Musk’s office.
A non-trivial engineering solution seems to be the use of welding parts of tanks using the friction stir method. The technology makes it possible not to melt the welded surfaces to a liquid state, which is why there are practically no weld defects after cooling. All equipment for such a delicate engineering process was developed at the domestic JSC Cheboksary Enterprise Sespel.
The main advantage of the Soyuz-5 launch vehicle is the greater mass of payload delivered into orbit than that of its main competitor, the Falcon 9. According to calculations, by about 10-15 percent. At the same time, the cost of launching the rocket should remain the same - 55-56 million dollars, which is lower than the Falcon 9 with its 62 million, even in the version with a returnable first stage. By the way, within the framework of the Soyuz-5 topic, the authors are considering the possibility of returning the first stage to Earth and reusing it. There are no problems with engines in this sense - they are initially reusable. They plan to carry out a soft descent using parachutes. If everything goes according to plan, then Russia could take over some of SpaceX’s customers, especially from friendly countries