A lead comes in from a form, an ad, or a forwarded email. It lands in a shared inbox or fires a CRM notification nobody has open. Somebody spots it between meetings, skims it, and decides it can wait until they're back at a desk. The first touch goes out hours later, or the next morning.
Then the second touch never happens, because the rep who owned it is chasing a hotter deal. Nobody decided to ignore the lead. The system just has no memory, so slow-but-real buyers quietly evaporate.
Add it up across a week and follow-up is one of the most expensive manual workflows in the building, because the cost isn't the labor. It's the deals that went to whoever answered first.