Andy Warhol once said "the glory of the modern world is that the very rich man and the very poor man enjoy the same things. The average person and the millionaire drink the same Coke". And they very often take an interest in the same things. It's just that the scale is often different. Betting on horses vs owning horses. Five-a-side vs investing in a professional team. Visiting a gallery vs donating the art that hangs on the walls. Their interests are our interests, but they are superfans and investors all rolled into one.
Nowhere is this more to be seen than with sport. JP McManus and John Magnier, both steeped in Irish equestrian culture, are also among the most important owners in racing. McManus's many interests are also reflected in his many investments in other sports: Manchester United and Limerick Football Club - last year his huge wealth meant that they did not have to wear any business-promoting logo on their jerseys. He has also thrown funding behind a soon-to-be-opened rugby visitor's centre in Limerick.
Telecoms mogul Denis O'Brien was named honorary president for life at the FAI in 2018; while his longstanding financial contribution to the organisation had, by then, ended, soccer remains his biggest sporting interest. Dermot Desmond last year became a 25pc shareholder in Shamrock Rovers. Investing in a team in such an embattled league might not seem like the most obvious business moves but none of these are strictly investments; they represent the passion and interest of the moguls who make them.
Very slowly, after a few quiet post-crash years, some very pricey toys have played a part in how our billionaires spend their free time.
A recent Vanity Fair piece called private jets "the singular fetish object of the modern billionaire" and they have made a comeback in Ireland. Denis O'Brien relies on his €70m private jet for his business travel and owns a €40m yacht as well. JP McManus had the first G650 Gulfstream Jet registered in Ireland. MCD supremo Dermot Desmond used to have an interest in a private jet hire company but he still retains his own private jet. Meat magnate Larry Goodman gets around in a Dassault Falcon 7X worth €38m.
Art is where the super wealthy seem to play the game as well as fund it. Their patronage and competitive bidding drive the popularity of artists up and down. Mark Getty, an heir to the Getty oil fortune, and an Irish passport holder, has an eclectic art collection, which ranges from old masters to a Banksy.
One of the country's most successful businessmen, Michael Smurfit, has an art collection that includes top pieces by Louis le Brocquy and Jack B Yeats. John Magnier was once rated by Fortune magazine as one of the world's top 10 collectors. In 2018, a nude portrait by Amedeo Modigliani, which was owned by Magnier, sold for $157.2m (€131.7m) at Sotheby's, achieving the fourth-highest price for any work of art at auction.
It has been reported that there are now a 78,000 millionaires in Ireland and we count over 20 individual billionaires. Wealth is becoming more common and with it the boundary between the pastimes of the super rich and the average citizen are blurred.
Developer Johnny Ronan loves cycling. The most expensive thing Stripe's John Collison owns is, he says, his bike.
These are hobbies which are open to all - and, in this, they are very modern Rich Listers.