In the example of your Amiga, your hard drive failed, but it probably would still boot right into any game from any floppy that didn't require workbench to have been booted from floppy or HD. The game could very well have been written in workbench booted from workbench/assembler from floppy.
The same game, replicated in Unity, requires a several gigabyte download just for the developer to light up a white pixel on a black background in Unity.
Is the juice of Unity worth the squeeze? It depends on the game I think. Using Unity to get a Super Meat Boy clone on a Nintendo switch starts to ride the line of absurdity (i.e. using a massively complex and capable game engine to make a knock off of a beefed up version of a flash game that was paying homage to games written in 6502 assembly and booted instantly and never crashed).
The same game, replicated in Unity, requires a several gigabyte download just for the developer to light up a white pixel on a black background in Unity.
Is the juice of Unity worth the squeeze? It depends on the game I think. Using Unity to get a Super Meat Boy clone on a Nintendo switch starts to ride the line of absurdity (i.e. using a massively complex and capable game engine to make a knock off of a beefed up version of a flash game that was paying homage to games written in 6502 assembly and booted instantly and never crashed).