Modular architectures (highly reusable designs) allow for the creation of new market segments to explore. A good example are Cubesats:
https://www.space.com/29320-cubesats-spacecraft-tech-explained-infographic.html
Quoting:
"The CubeSat program began in 1999 as a collaboration between California Polytechnic State University and Stanford University. The goal was to design a standard for picosatellites, tiny Earth-orbiting boxes usually with a volume of about 61 cubic inches (1 liter) and a mass of about 2.9 lbs. (1.33 kilograms).
CubeSats are built in a variety of sizes, from 1U (one unit) up to three-plus units. Rails on the edges smooth the ride as the satellite is ejected from the P-POD deployer. Rectangular access doors are arrayed down the side of the satellite."
