There are some major differences.

1) Increased pool of unskilled labor-- manufacturing industry tanked, increased immigration.

2) Proliferation of internet connected, smartphones.

3) Avoiding obvious mistakes: no free deliveries for a bottle of coke, like in webvan days.

4) Doing direct store to consumer deliveries, avoiding warehouses, getting 20-25% cut from retailers (who see this as savings in marketing cost and reduced in-store staff cost)