What is the incentive for the shops to scan and upload all products with correct description picture etc. this is a huge work, and just the access to a bigger m

What is the incentive for the shops to scan and upload all products with correct description picture etc. this is a huge work, and just the access to a bigger market doesn't seem to be enough. Locafox in Berlin is pretty much trying to build a similar aggregator of local shops https://www.locafox.de/ https://www.locafox.de/ It doesn't seem to work too well which is why they diversified into selling digital cashier machines to local businesses instead.