Other folks in this thread have pointed out it doesn't work
> Ask them why.
Because they need a sponsor to switch - that is not freely - and as you say it "costs a company at most $4000" which is not free.
F-1 OPT isn't mentioned any where else in this thread. So you still haven't explained why "OPT is broken".
> Because they need a sponsor to switch ... which is not free
Practically speaking, for people in tech, this isn't a problem, because most/all companies sponsor, and are willing to bear the $3-$4k cost.
Other folks in this thread have pointed out it doesn't work
> Ask them why.
Because they need a sponsor to switch - that is not freely - and as you say it "costs a company at most $4000" which is not free.