As you said, Decathlon is a primarily brick and mortar shop. They have huge revenue worldwide ($13B in 2019) from their shop and it really doesn't look like the

As you said, Decathlon is a primarily brick and mortar shop. They have huge revenue worldwide ($13B in 2019) from their shop and it really doesn't look like they pushed hard for e-commerce. The thing is, a lot of what they sell is big or heavy, so the shipping cost would be very high. Plus, a lot of items they sell are something that most people will want to try before buying. So their business doesn't work too well with e-commerce. Combine this with the fact that, if you are not in the U.S.A, you probably have a Decathlon shop not that far from you, and their website is basically just a vitrine. People look at product there but go to the shop to buy them. The only thing I know people buy from their website is replacement parts.