Comment by Mehdi2277

It’s opposite. Venv is built into python and part of standard library. It is part of cpython repo and developed by python maintainers. Some Linux distributions remove it from standard library but windows/Mac always has it. The Linux distributions that have python without venv are considered incomplete python install and packaging community has considered not supporting that case in future. At moment pip tries to allow that case but in future may just require venv and consider Linux distributions that remove it as shipping a problematic python.