Most of the time, there are enough ideas, hidden or exposed. From a management perspective the main point is how to select the right ideas. Modern insights into management of innovation' have led to the opinion that one should not kill ideas too quickly.
Get rid of the wrong ideas, but give people the freedom to work a bit further on the doubtful ideas and pick up the vary promising ideas as soon as possible.
Until a budget is allocated to 'an idea', elaborating on the idea (make a proposal to convince managers by for instance careful thoughts about technical and market feasibility) is not expensive. So, killing to many ideas too quickly means not getting enough innovation projects in the pipeline. Increasing competition demands a full pipeline of innovation projects..
Many good ideas lead to minor improvements in organizations, which can be implemented in a few days or even a few hours. I call them 'improvements'.
Ideas for which a business case is written, I call 'project ideas'. All project ideas approved and followed up by an actual innovation project (with budget, team and planning) I call 'innovation project'.