Everyone talks about the importance of validation, but how do I validate my idea when my target market is big companies and nobody there wants to even talk?
It seems that people in these companies are extremely busy and they are bombarded by sales people & unsolicited proposals every day. It would be easier getting an interview with the queen than with people working in any level of management in these places.
Just knowing WHO to talk to is a challenge in itself & nobody will ever get back to you. I've used LinkedIn to acquire connections but getting any response is extremely difficult.
If it's this hard to just ask a question, I hate to think how I would ever succeed in actually marketing the finished product to them.
This is your validation. It is telling you that, for now, big companies are not your target market.
Your initial target market should be people that you can reach. For example, if you can get small businesses to talk to you, then make them your target market, and validate ideas to serve them.
If you really want to work with big companies, then still follow this advice and find another target market (such as small businesses). Once you have success with SOME target market, you can use your existing customers (who know and trust you) to refer you to buyers in your preferred market (big companies). Also, remember that people change jobs. A customer who works at a small company can go to work for a large company.