Every few years a company rips out its CRM, buys a new one, and expects things to change. A quarter later, the new CRM is just as empty as the old one. The tool was never the problem.
A CRM fails when it depends on busy people to remember to update it. Reps are paid to sell, not to log activity, so the moment things get hectic, the CRM falls out of date, and once it's out of date, no one trusts it, which means no one uses it. It's a death spiral that no amount of new software fixes.
The fix is to remove the dependency on memory. Log calls, emails, and meetings automatically. Model pipeline stages on how the team actually sells. Route and assign leads without anyone touching a field. When the CRM updates itself, it stays current, and when it stays current, people trust it and use it.
That's the whole game: make the system reflect reality without asking humans to maintain it. Do that, and your CRM finally becomes what it was supposed to be, the operating system for your revenue, not a graveyard of stale records.