This is false. H1B visa holders are explicitly bound to their employer and cannot take another job without getting a new visa from the new employer, or transferring their old visa.
When the employer is an Indian agency, the employees are usually working under a contract of indenture and cannot leave without being released by the agency.
H1B employees have no legal or political recourse available to them in this country, and if they raise any objections about anything, they can be fired and immediately deported.
This is not a system we should permit to operate in America.
You don't know what your talking about. I work in that industry, I do know what I am talking about. Once you get an H1B , you the H1B is attached to you, and you can go to any other company and use it, and get extended. You absolutely do not need a new Visa to work at a new company.
But, the original company is on the hook for the costs. Getting an H1B is very expensive. It was $20k to pay the lawyers etc., but I haven't asked in a while, it could be more now. And once you pay that money, the employee can take off for a better paying job.
The first start up I worked at refused to hire H1Bs because it was too expensive and risky. They paid for H1Bs for two hires, and within three months both left for better paying jobs.
You need to do your research, you are uneducated about this. You may be confusing H1Bs with L1 Visas.
To get an L1 Visa, you have to work for one year for the same company outside the U.S. Then the company can move you to work for them in the U.S. But you can't go work for another company, unless they sponsor an H1B Visa for you. So a lot of them are trapped. Companies can bring an unlimited number of L1s every year. And the companies can pay them less, I guess, because of their lack of options. But not so with H1Bs.
Also, there are a max of 65,000 Visas per year, but Australia, Singapore, and Chile have a special deal where there is unlimited from those countries, but I don't really think that has lead to more from those countries. And, of course, Canada and Mexico have TN Visas, which are unlimited, but I don't think they have ever gotten close to the number of H1B Visas.
There is also an unlimited number of O-1 Visas, the so-called "genius Visa." There are not defined criteria, and I don't think lawyers have tested it. You apply and you are either accepted or rejected. I think there are about 10k-12k per year. You have to have a Nobel Prize, or some other evidence of your genius to get it.