I don't think Pac single-handedly represented us as a region, let alone a state despite his iconic status. He was from NY and still living there a very long time before moving to our side of the nation. We had various kinds of West Coast artists that the Independent and Mainstream scenes promoted.
Those kept us alive even before his career took off, and after he passed.
1. Cube, Xzibit, and Snoop were going strong until the middle of the 00's, Game revitalized L.A., Black Eyed Peas had the Alternative Rap wave on lock until they sold out and exclusively did EDM/Pop/Party Rap bullshyt.
2. Del was leading the Bay Area in the Independent scene alive, as well as E-40's and Too Short's careers coming back.
3. In this decade Black Hippy, YG, etc. is running things on both levels (Despite Jay Rock being the least successful and critically acclaimed). Granted, NONE of them are Pac, we evolved from multiple angles after his death - certainly aren't dead at all either, regardless of Kendrick using him as template for TPAB.
There hasn't been a decade where we "fell off" yet in terms of artistic direction, popularity and relevance to Hip-Hop.
When you think about it, the West deviated the least from our Hip-Hop roots compared to the other 3 regions. Our identity is still intact, yet we stay innovating new sounds in production that continue to fit our lane.