The first successful landing of the F9 was in December 2015 so we're only five years and a handful of months since then and the Starship has just had its first mostly successful landing. Sure not from orbit but they are experimenting with the hardest part now.

SpaceX's competitors must be just crying in their beer knowing that launching on the Starship will eventually (sooner than you think) be even cheaper than the F9.

Progress in rocketry has now blinked into warp drive.