[osazuwa]

The main distinction in investment. If you take investment, especially VC investment, no one gives a f*ck about cost savings. Your job is to provide an exit to investors are soon as possible, and you do that by growing market share.

If you are not taking investment, or otherwise get investors that are in for the long haul, and you intend to fund yourself off your revenue, then cost savings matter. This is usually appropriate for small niche markets that are too small for institutional investors. Note, such niches can still be million dollar businesses.