Go lease a car and then if you want to buy in the middle of your lease they are not going to make you pay because you are breaking the lease.
Yes they are. If you are buying the car with installment payments (bit by bit until you own it), it is different. If you LEASE a car from a leasing company for X years, and after the years are over you must return the car, and in such case they either a) will not sell it to you at all in the middle of the deal, or b) will charge extra for terminating the contract compared to a car bought from a regular "market". In most cases the b) is not even an option, they allow you to buy it only after the contract period is over.
End of story - you have a contract with the leasing company and they are not a charity. If you have ANY contract (fuel, aircraft, loans etc) and you wish to change it, there will always be costs associated to it when not sticking to the original contract.