We are all here reading and thinking about it. And SV taken as a whole eats its own dog food: I was amazed the first time I worked with a YC company how many other nearby startups they used as vendors.
If you think about Boom as part of an ecosystem, they will eventually need a large number of companies to buy seats on their planes. As with Concorde, only a minority of seats will be saleable to individual consumers. Now Boom, they're here, getting name recognition at hundreds of SV companies, some of which will have offices in London, Singapore (where Concorde also briefly flew), etc.
If you think about Boom as part of an ecosystem, they will eventually need a large number of companies to buy seats on their planes. As with Concorde, only a minority of seats will be saleable to individual consumers. Now Boom, they're here, getting name recognition at hundreds of SV companies, some of which will have offices in London, Singapore (where Concorde also briefly flew), etc.