DEC was run by engineers who allowed their technology to be stolen by Intel. They had faster chips than Intel.
“...their technology to be stolen by Intel”
Actually that is not exactly true.
There was one minor feature which allowed two processors to determine which processor cache to flush in MP systems.
This feature was added to the original Pentium for 2 processor systems.
The court ruled that DEC owned the rights to it.
Intel was forced to buy the DEC design center and fab in MA as part of the settlement.
Those people still work for Intel but the Fab was so outdated it wasn’t worth upgrading.
Not trying to justify anything but at that time, Intel was more concerned about AMD, Compaq/MIPS and Sun Microsystems than DEC.
All current Intel processors now use a modified PCI-e circuit for processor to processor communication.
This came out in Nehalem core back in 2006.