I really don’t know the answer to that. I assume Santa Clara county, which is where San Jose is, has always been considered part of the Frisco metro area.
“Santa Clara County, officially the
County of Santa Clara, is the sixth-most populous county in the U.S. state of
California, with a population of 1,936,259, as of the
2020 census.
[4] Santa Clara County and neighboring
San Benito County together form the
U.S. Census Bureau's San Jose–Sunnyvale–Santa Clara
metropolitan statistical area, which is part of the larger San Jose–San Francisco–Oakland
combined statistical area. Santa Clara is the most populous county in the
San Francisco Bay Area and in
Northern California. The
county seat and largest city is
San Jose; with about 1,000,000 residents, it is the
10th-most populous city in the United States,
California's third-most populous city and the
most populous city in the San Francisco Bay Area. “.
I know as a kid who spent time in San Jose, I was an A’s fan, mainly because Candlestick was too cold for baseball and I preferred driving to Oakland instead. San Jose is home to the San Jose Giants, who are a minor league affiliate of the SF Giants. Not sure if that’s part of why the Giants fought the A’s relocation.
Btw, I had to look it up because the wiki quote above had me wondering…
California’s largest cities by population
1) LA
2) a whale’s vagina (if you know you know)
3) San Jose (1,000,000)
4) San Fran
5) Fresno
6) Sacramento
7) Long Beach
8) Oakland (400k)
Based on this info, we can see why the Giants would have preferred the As move out of the Bay Area entirely.