Nobody budgets for the time spent switching between tools. It doesn't show up on an invoice, which is exactly why it adds up unnoticed.
What the research actually says
Context-switching costs in knowledge work are well documented -- every interruption carries a real recovery cost before someone's back to full speed on what they were doing. The same dynamic applies to jumping between a CRM tab, a helpdesk tab, and a spreadsheet dozens of times a day. It's just never itemized on an invoice the way a SaaS subscription is, so it's easy to treat as free.
Every alt-tab between a CRM, a helpdesk, and a spreadsheet is a small reload of context that a unified view wouldn't require.
Without integration, the same customer record exists in three places, and nothing guarantees they agree with each other.
A leadership rollup across five tools usually means someone manually stitching numbers together before anyone can trust them.
Where it shows up first
Customer-facing roles feel it hardest. A support rep re-explaining account history to a customer because that history lives in a different tool than the one the ticket came in through isn't just slower -- it's a worse experience for the person on the other end, who reasonably expects the company to already know what it knows.
What consolidation is really about
It isn't about cramming more features into fewer tools. It's about reducing the number of places the same fact about a customer or a deal can silently diverge -- which is a data-integrity problem before it's ever a convenience problem.
None of this shows up as a line item, which is exactly why it's easy to underestimate -- and why consolidating into fewer, connected tools tends to pay for itself faster than the sticker price suggests.