eg tackle poverty, hunger, homelessness, climate change, freeing everyone from 9-5 jobs to pursue their own passions, reducing living costs to give everyone more free time to pursue their passions, creating new models for collective governance, helping communities to bootstrap collective intelligence, distributing the web and institutions, building models for open P2P accounting and supply chains, brain computer interfaces etc etc etc etc etc.
Attempting to monopolize the home improvement industry by becoming a middleman that routes tasks and takes a cut, with the goal of selling the company off is truly lacking imagination.
At the very least you could build Ergeon as a distributed and open network co-operative. Cap your team to a max of 20 people, pay everyone including yourself the same salary, either distribute zero shares to anyone (inc founders or investors) or equal non-transferable shares to all contractors + team (with dividend payouts), setup the company such that it can never be sold (whatever legal setup makes sense), have public transparent financials, charge a 1% transaction fee but cap your annual budget and pay back any excess to the network of contractors. That would be profound.