Which companies are those? SpaceX is the only one I know that he founded and which, through their satellite network advanced "technological wealth". Also this

Which companies are those? SpaceX is the only one I know that he founded and which, through their satellite network advanced "technological wealth". Also this lists definition is: > "Each figure is the shareholder wealth a founder’s company created, now held by index funds, pensions, employees and co-founders, minus what the founder kept." How should this even remotely apply to Elmo?