Robert Bigelow grew up in Las Vegas in the 1950s, and saw the nuclear testing that took place nearby. This spurred a love of science that he carries with him to this day.
He vowed to one day spend $500 million to create the first commercial space station, and established Bigelow Aerospace in 2000.
Their focus would be on inflatable habitats, a technology that NASA developed while working on the Transhab module for the International Space Station that was eventually cancelled. Bigelow Aerospace bought NASA's patents and began working on their own versions.
The first program, GenesisI1 and Genesis II, were unmanned inflatable habitats that tested the technology. The habitats were functional for 2 and a half years and performed well enough that NASA contacted Bigelow to test an inflatable module on the ISS.
Bigelow created BEAM - the Bigelow Experimental Activity Module, which was installed on the ISS in 2016. It has performed perfectly, getting its original 2-year mission expanded beyond 2020, and has shown to stand up to micrometeorite impacts and radiation as well as the rest of the ISS.
Bigelow's next step is to launch the B330, a 300 cubic meter inflatable habitat that is the centerpiece of their plans. Bigelow wants to use multiple B330s to create commercial space stations in orbit. B330s may even be used as habitats on the moon.
Beyond that, Bigelow plans to build the B2100, a massive habitat with 2 and a half times more volume than the ISS. These would be the first space hotels.