No.
There are many legal reasons for that. One of them is money laundering. Refunds. Taxes. And so on.
It sure would by handy to buy assets and have correct paperwork automatically. You need to realize that you are technically a business if you sell. That's why you have to do a tax interview. And businesses do not buy games for fun. But they do buy assets.
Itch does not offer services that I know of. If you want to support Itch, slide the revenue share slider to be higher than 10%.