I'll grab source code if I'm doing development or something obscure, but I feel like packages have been pretty solid and widely available since the early to mid 2000s. When working with source code I'll almost always install to a custom PREFIX--but if it's just an app the source is the last resort.

All of the commercial packages I've used at work for the past 15 years target either one or a handful of distros. Even the open source stuff that's either too new or outside of the default repos I much prefer to install from a package; turbovnc, grafana, chrome, etc. The few games I've seen have worked the same way as other commercial user-oriented apps.