My newsletter: https://simonowens.substack.com/   Most companies buy advertising to drive sales of their products, but Andrew Curtin’s first sponsor mostly bought out of pity. It was May 2022 and he had just launched Construction Wave, a B2B outlet that covers the UK’s construction industry. He had absolutely no audience, but a major crane manufacturing company bought a $10,000 sponsorship anyway.   That $10,000 allowed him to hire his first editor, and over the next two years they built Construction Wave up into one of the leading publications in its sector. Its website is mainly monetized through high-priced sponsorships, and this year it hosted its first conference geared toward construction CFOs.   In an interview, Andrew explained how he got interested in the sector, where he found his initial readers, and why he thinks there’s an opportunity to launch a subscription data product for his industry.