Hi Guillaume
I would use the questions / answers you have as a chance to build out robust help and support sections for your products. Not only will this help you from a search standpoint with long tail queries, but it will also help you from a user standpoint as they will have a point of reference to help them with issues, answer questions as they decide if they want to buy your product, and also help with brand equity as you build more content that details answers more. What I would suggest, pay attention to the following:
- What questions are users asking?
- What issues are they having most with your product?
- How does your product compare against other products in the industry?
- What does yours do that competitor products don't?
- What new features are you adding?
- Are there any features that are underutilized by users?
- Are there any integrations you may have?
- What's the history of the product?
- What are competitors doing from a promotion standpoint that you're not?
When it comes to keyword cannibalization, that's not an issue. Two different pages can overlap in keywords so long as those pages have unique content regarding a particular keyword. To me, the two examples you listed above are two different ideas, as long as the general idea is different than the software idea and contains different steps.
What matters is that each page has it's own unique topic to the keyword and does not share content with another page. You'll find that as you are focused on a particular industry and product, that these things happen, but it's relatively easy to keep pages specific to an idea regarding a keyword. Also look for opportunities to repurpose content:
- Images
- Video
- Articles
- Gated content
- Etc.
Opportunities are limitless when it comes to content, even for a boring industry. It just takes time and digging. Let me know if this helps and if this answers your question. You have more than enough to make robust pages of content, and should have no idea to nodinex or canonicalize pages to one general FAQ page. Build more content, internally link in a smart way, and keep your eyes / ears peeled.
Good luck!
Patrick