BOM management
Three files with similar names and nobody sure which one matches the revision that shipped.
Use cases
Four moments where it shows
None of these is a new problem. What changes is that they stop being solved with memory, shared drives and whoever happens to remember.
Component library
The same chip described three different ways because every project entered it separately.
Technical documentation
Datasheets, Gerbers, schematics and reports living in folders separate from the product they describe.
Redesigning an old product
Another run of a seven-year-old board, or a chip that has gone out of production.