[phibit]

+1 from someone who has been on H1-B, I recognize it as a great opportunity and privilege.

The option to return to my home country was never taken away from me, and at every step I knew I retained the freedom to simply quit my job and leave; I did not do that.

No, an H1-B does not afford you the privilege of switching jobs or careers easily. There's no reason to think it should, and that is made very clear during the application process.