IMO it depends on each artist’s way to create music and on the budget.
Comparing a “standard” groove box and a modular system to achieve similar results I tend to say that the modular will not only cost much more, but also will lack some technical features, which might be practical and make daily life easier for many of us.
Could it be that somebody starts with modular and reconsiders later?
Only as an example … a comparison, which is not intended to be fair or exhaustive.
Compact groove box or drum machine:
- often quite excellent sound engines
- sequencer included - maybe with parameter locks etc.
- everything, patches, pattern etc. can be stored in projects and recalled
- MIDI / CV / USB interfaces
- sometimes a control/library app for computer integration is available for free
- affordable (beginning with a couple of 100,- €/$ and ending, well … )
Modular groove box or drum machine:
- rack case and all required modules to be purchased (if not bought as a ready to go system)
- option for very unique signature sound creation
- most sequencers provide “basic” functionality only and limited tracks/outputs
- saving/restoring complete “projects” isn’t supported, even if some modules can save parameters or pattern
- did I mention all the cables and the need to re-patch for different projects?
- quite costly (beginning between 2000,- to 3000,- €/$ and fast increasing cost with more features)
My personal strategy for purchasing gear is:
- buy standard for standard jobs
- buy modular for creative sound-design, new composition methods, and experiments … in other words … where modular shines and outperformes the other options