This is incorrect. Whilst you may be sceptical about whether quantum computers can be realised, the theoretical result is sound. Recent advances in quantum err

This is incorrect. Whilst you may be sceptical about whether quantum computers can be realised, the theoretical result is sound. Recent advances in quantum error correction are a significant increase in confidence that quantum computers are practical. We can argue about timelines. I suspect it is too early for startups to be raising funds for quantum computers at this stage. Source: I worked in quantum computing research.