One reason the "rusty bicycle" approach has worked so well is because of economies of scale. If you look at mean time to failure on "commodity consumer" vs "ent

One reason the "rusty bicycle" approach has worked so well is because of economies of scale. If you look at mean time to failure on "commodity consumer" vs "enterprise grade" GPUs they're very close and price wise the consumer hardware is significantly less expensive on a flop/W/$ basis.