The pyramid effect kicks in - your next hiring manager has to justify your hiring costs which will fall under the hiring budget/compensation costs for the company.
Also in case of senior hires - the comp includes long term capital gains in form of stock grants. They come with their vesting schedule which tells you when you can actually liquidate those stocks. Usually it is over a period of 3 to 4 years.
So for a 1 Cr salary - the fixed might be 60 lakhs, 10 lakhs in actual cash bonus and the rest in form of ESOPs/RSUs that are vest over time. So the actual annual take home might be very different.
*These are directional numbers and combinations can vary across companies/roles.