pic.twitter.com/hp2HD1XiwD
— BI Intelligence (@BIIntelligence) September 29, 2014
While there is a constant business and technical conflict for companies to chose between desktop browsers, mobile browsers and apps development; this graphic by BI Intelligence provides some insights.I think companies should also look at their business model and determine how much to invest in the varied technologies. In this case, the business model of Amazon and ebay is different form other companies like Best Buy. While a app is very helpful and easy for bidding and checking bids (ebay), and to pick an item from the shelf and check if it is available for a better price (Amazon); a browser based site is important for retailers who want you to visit the stores and experience the product.
You might still want to visit Walmart to check out the item and open ebay and Amazon app to check for a better price.
Looks like its a right move for browsers to provide an easy switch between browser and mobile versions (Safari).