If more bitcoin will be mined the price or value of bitcoin will increase it is as simple as law of demand and supply, as the supply getting fewer and many people demand on it price will increase.

Next, I doudted that bitcoin scenario of all bitcoin will be mine, everyday there hundreds of thousand selling and buying of it, so it creates another block on the blockchain and also depleted block. In addition (IMO) bitcoin mining are hard unlike mining altcoin.