The Sides are mostly “reserved” for I/O or the inner space ist already used by the battery. The Back IS possible and often used but mostly blocked by the display too. Front also blocked by the battery.
So what remains ist the bottom and the manufacurers try to minimize the problem with lifted feets which is mostly useless ob the lap.
But I consider gaming laptops not as mobility foccussed. They’re more foccussed on the ability to carry around but using on a desk.