“Pay for me” service

Quite unexpectedly this idea came at night:

Idea

I will pay for purchases on the Internet for someone for a percentage of the transaction.

Need

Not everyone has a WebMoney wallet, Yandex.Money or a credit card to pay online, but they want to buy something from the online store.

What you need to do

1. Site for submitting applications from users (hosting + site)
2. Credit card for payment (including overseas stores)
3. Accounts in main payment systems
4. Program to record what is happening on the computer with the ability to broadcast to the Internet
5. Separate mailbox and ICQ, Skype, Jabber
6. Netbook for quick response to customer requests
7. Cellular (mobile) Internet - USB-modem or just a phone
8. Initial capital
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How will work

0. The user finds the product he needs on any website on the Internet.
1. It is registered on my site. Specifying the data of their payment systems, if they are of course.
2. Draws up an application, indicating links to products that he wants to buy. The application may contain the login and password to this site or all the data for the application.
3. I receive an application and follow these links.
4. I look, through what system of payment I can pay for these goods and delivery terms.
5. I contact the client, I inform him of the possibility of this payment and all the conditions of delivery of the goods + the exact cost of services and goods.
6. If he does not have a registration in the payment system, I create a new WebMoney wallet specifically for him, otherwise I bill him.
7. He replenishes it in any way possible (money transfer, terminals, etc.)
8. After receiving the funds, I turn on the program to record what is happening on the screen and buy the product.
9. I post videos on the site as an answer to his application.

Problems

1. User mistrust - fear that I will throw it. It may be worthwhile to introduce a prepayment mechanism, but the user may simply not pay later.
2. Theft of my card. It is possible to make a virtual card.
3. Any legal problems (?).
4. Taxes
5. Too high percentage of overpayment for the goods.
6. Manual labor: it will not always be possible to automate it.

What is now

1. Creating a virtual credit card , for example, Virtual Prepaid Visa Card | 1st Processing Bank , Alpha.Click
2. A bunch of payment systems and terminals
UPD 3. Narrowly specialized intermediaries for purchase in online stores.

How do you like the idea?
If anyone has anything to add, I will be glad to all the comments.

PS An additional question: why have the payment systems still not made a virtual wallet that can be created through the terminal (or am I just not in the know)? After all, some simply do not want to register and install something for themselves. Although if he (her) the product is strongly needed, you can spend a few minutes on registration.