I think that we should have a global virtual marketplace for cryptocurrencies without any intermediaries. This would lower the costs of transactions and decentralize the market. What do you think? Is that possible? What are the benefits?
There are some places like that, first of all the darknet was all about that. There were places like silkroad that basically created a virtual market place that you can pay with bitcoin.
Since, it was on darknet and it was with bitcoin it all turned into drug dealers paradise but that wasn't the only thing that was sold there. After all of that was over there was a decentralized marketplace (I forgot the name) that you downloaded to your computer and everyone who had that became the marketplace, just like bitcoin network.
You could sell anything there from virtual goods to regular goods, I once saw a very very cheap cigar collection and I was really tempted but couldn't trust neither the seller nor was I sure if it would be a problem at the border. There is also bitify or something which is online and basically ebay for bitcoin, it has everything you ask for as well.