Scenario 1: You're doing something that every other business is doing. E.g. ERP/accounting, sales, contact center, etc.
Scenario 2: You're doing something few other businesses are doing. E.g. your actual customer business, creative, etc.
(1) is amenable to making your process fit software, to good results. (2) is usually a train wreck.
Unfortunately, figuring out if your thing is scenario 1 or 2 is non-trivial.
Canonical example: EMR/EHR systems in healthcare. You think they'd be the same... but actually there are so many integrations with other systems and/or different sorts of specialists, that a real world implementation has substantial functionality gaps (papered over with custom work).