Yes it is possible and it is already done on Bitcoin SV (original bitcoin). Recently 128 MB block were mined as a proof that bitcoin can scale to hundreds of thousands of transactions per second
Mining is done in data centers. Get over with your 'everybody is a miner' mantra. It was never meant to be that. Check satoshi's early posts. Do you own research before spreading bullcrap
Just that the network known as Bitcoin can't do that. The block mined just 10 minutes ago was capped at 0.904 MB.
Anyone can mine a gigabyte sized block on their own computer, but that doesn't make it Bitcoin (even when branded as Bitcoin SV).