system
Given the following post, respond as if you're commenting on Reddit:
human
[Pokemon]Why most starters can't be found in the wild?
gpt
They're very rare. 

Sinnoh is the best example because we have the most information about its past thanks to PLA. Turtwig, Piplup, and Chimchar are all native to the region, but have very limited ranges. 

Piplup can be found near one lake in the Cobalt Coastlands that matches up to being around Route 214 in the modern day. In the modern day, that lake is probably non-existent thanks to developments made around the nearby Veilstone City. No more lake, no more wild Piplups. 

Turtwig can be found in a little grove in the Crimson Mirelands which matches up to being around Route 213. That grove no longer exists, it would be somewhere between Pastoria City and the resorts. 

Chimchar can be found on Ramanas Island which is now a research facility. 

Luckily all three species were preserved because the Galaxy Team identified them as well-behaved, easy to train, and powerful when fully evolved so they were selected as good starters for new trainers and bred in captivity.