This feels in very bad taste to me. As another user pointed out, these articles are being authored and maintained by volunteers, who are donating their time and effort to make information accessible to people. Instead of joining them in that pro-bono effort, you're trying to leverage their work to your own profits. Yes, it requires some up-front work from you to format the articles, but it's a one time cost while the authors are continuously working. And sure, you have to pay for hosting costs, but then you could still run it as a non-profit that only recoups costs and donates the rest to Wikipedia.
If you want to make a business out of this, I'd suggest investing in having people author some original articles. But taking someone else's volunteer work for your own gain is not something I will support. Not wanting to invest your own time and money to make your project work long-term doesn't justify using other people's time and efforts to make your project work long term.
If there's any part of your data pipeline that I misunderstand and rectifies the situation, I'd be happy to have my understanding fixed.