it's already a thing in China, you can buy Lego clones for 1/10th - 1/3rd of the original one

it's crazy how much ask Lego for few order of plastic, I couldn't believe how cheap rest clones are in China, it's shame they are not that cheap on AliExpress

lego doesn't have patent on brick, so they can be exactly same and compatible, from my experiences only difference is in manual