Uber and Ebay for DIY's
Firstly sorry for being vague, I believe this has the potential to grow rapidly, and the early entry will secure the market if done right. The product will allow people to be a customer and a seller, it will be self-governing by way of feedback, it allows everyone to easily make best use of items that they only use occasionally. It can easily reach a wide demographic market and is expandable very easily. It will compete with a large number of local bricks and mortar business, but is much more appealing due to the flexibility that it can offer.