FWIW, Google did use commodity hardware and tools when they started. That was actually one of the things that supposedly made them innovative at the time. Instead of spending lots of money on beefy Sun servers, they put together stuff out of corkboards, components you could find in a PC catalog, and Linux. Their programming language was Python; their webserver was based on Medusa; their distributed filesystem was NFS; their logs processing was all UNIX tools.
All of the fancy homegrown ops stuff came afterwards, once they got lots of VC and could hire some really talented experts. GFS, MapReduce, Sawzall, the custom networking & server designs, the proprietary webserver - all of that was in the early 2000s, ~1-2 years after incorporation and 5 years after Larry first started working on it.