When you need more in-depth information, marketers must develop their own research and obtain data.

Sure, I can help with that. Here are the steps a marketer might take to develop their own research and obtain data:

1. Identify the Problem: The first step in any research process is to identify the problem or question you are trying to solve or answer. This could be anything from understanding why a product isn't selling to figuring out what kind of content your audience wants to see.

2. Develop a Research Plan: Once you've identified your problem, you'll need to develop a plan for how to research it. This might involve deciding what kind of data you need, how you'll collect it, and how you'll analyze it.

3. Collect Data: With your plan in place, you can start collecting data. This could involve conducting surveys, interviewing customers, or analyzing sales data.

4. Analyze Data: Once you've collected your data, you'll need to analyze it to draw conclusions. This might involve looking for patterns or trends, or using statistical analysis to understand the data.

5. Implement Findings: Finally, you'll need to implement your findings. This could involve making changes to your marketing strategy based on what you've learned, or using the data to inform future decisions.

Remember, the goal of marketing research is to help you make informed decisions, so it's important to be thorough and accurate in your research process.