Sure. It'd be a lot easier to develop client apps for all of Windows, Mac OS, Linux, iOS, and Android, and then expect ten thousand triathletes to install somet

Sure. It'd be a lot easier to develop client apps for all of Windows, Mac OS, Linux, iOS, and Android, and then expect ten thousand triathletes to install something in order to register for a race that sells out in an hour, than to offload most of the form-handling work into Javascript that talks to a lightweight backend doing little more than data validation and storage.