I don't disagree that it makes economic sense in a lot of cases to go with these kinds of tools. I wonder though if this is really the direction we want to go as an industry. Do we reach some tipping point eventually? when our software is so inefficient that these things do start to matter again? Will we eventually hit hardware limitations that force us to rethink this practice? Maybe eventually there is some holy grail of cross platform productivity and performance to be had.