It use to be that you required larger teams to build software as a solution to problems before. As software tools get better and infrastructure tools get cheaper, it's more and more feasible to solve problems with software with a smaller and smaller team.

That, along with the trend of software being used to solve more and more problems (more stuff is being solved by computers), it would seem like that eventually, even something like spending people to space would only take a small team, as infeasible as that seems right now.

To farmers of yore, it would seem laughable that we are able to produce a lot of food with so little farms. To builders of yore (like pyramids), it seems laughable that we're able to build taller buildings with much less people.

Given that technology and pace of innovation keeps accelerating, we should be able to solve larger class of problems with less effort and less man power.