Please vet my startup idea — Buy/Lease Hardware as a Service

I imagine buying hardware for companies can create headaches and high costs because people selecting the hardware a) don't know what Hardware to buy and b) don't compare prices as they don't care too much about the price. I think it could be much easier for teams to have just one interface where they purchase any hardware needed for the office. Here they get help on selecting the right hardware by a much easier interface, suggestions coming from the portal and purchasing them automatically at the best price shop.

This service can be free for business and the startup will make revenue by getting a commission on each purchase.

And on yearly basis, I suppose they will save a good amount of money.

What are your thoughts on it?
Do you know how companies usually purchase their hardware?