# Niches *Small bets, big profits* --- You make gas detection units for hazardous industrial environments. Your market has fewer than ten competitors domestically, fewer than eighty globally. Your share is around 65%. Operating margins run above 25%. Return on capital employed sits at 40%. Sounds great - but how do you grow? --- The obvious answer is a bigger market. Your technology is adjacent to the broader industrial sensor market, which is fifty times larger. A 5% share of that would triple your revenue. The business case writes itself: leverage existing capabilities, cross-sell to current customers, expand the addressable market. But in a market fifty times larger, you're one of forty competitors instead of one of ten. Your brand recognition, which is near-total in your niche, is close to zero. Customer acquisition costs multiply. Sales cycles lengthen. You're competing against incumbents who know that market the way you know yours. Your margins compress from 25% to 12% as you invest in building a position. Your return on capital drops from 40% to 15%. Two years in, you have 1.5% of the bigger market and you've absorbed most of the cash your core business generated to get there. --- The less-obvious alternative is to grow the market rather than your share of it. With 65% share and 40% return on capital, your margins fund investment that competitors at 5% share can't match. New applications for your technology in industries that haven't adopted it yet. New geographies where regulation is catching up and creating demand that didn't exist five years ago. Adjacent problems your existing customers already ask you to solve. The market grows from £20 million to £50 million over a decade. You still own 60% of it. Revenue has more than doubled, margins have held, and you never left the territory you understand best. Your competitive position funded the expansion, and the expansion reinforced your competitive position. --- Now scale this across a portfolio. Not one niche but twenty. Gas detection, fire alarms, water treatment, environmental monitoring, health diagnostics. Each one small, each one dominated, each one funding its own market expansion. Trim the businesses that fall below target returns. Reinvest in the ones that exceed them. No single decision is bet-the-company. No transformational acquisition, no dramatic pivot, no entry into a market where you start from zero. Just thousands of small steps in roughly the right direction. [[Halma]] has run this model since the mid-1970s and barely changed it. A small industrial conglomerate became a FTSE 100 company worth over £10 billion, with more than forty-five consecutive years of rising dividends - a record unmatched in the index. ---