Equinix

**The problem they left to solve is specific and still worth understanding.** Networks have to meet somewhere to exchange traffic. In the 1990s the places they met were largely owned by telecommunications carriers, who were also participants - and a referee who is playing in the game will favour his own traffic, whether by design or by the ordinary gravity of self-interest. Congestion at those exchange points was not only a capacity problem; it was a governance problem.

The answer was a building owned by somebody with no network of their own. If the landlord sells no transit, has no traffic to prioritise and competes with none of the tenants, then rival carriers can meet inside without either of them conceding anything. **Neutrality here is not a virtue the company advertises. It is the product.**

PAIX itself deserves a line, because it is where the idea was proven. It began operating in 1996 under DEC, and in its earliest days the interconnection fabric was a DELNI - Digital's own Ethernet concentrator, a box designed for office networks, pressed into service as the meeting point for the commercial internet. Adelson worked there alongside Stephen Stuart and Paul Vixie, whose name is on BIND and therefore on most of the DNS this site's tools take apart.

The funding tells you who agreed with the thesis: a $12M round led by Benchmark Capital, with **Cisco and Microsoft** as strategic investors - a network vendor and a software company, neither of which sells transit, both of which benefit from an internet that interconnects cleanly.

**The business model insight came slightly later and is the more valuable one.** They began by selling floor space, power and cooling. What they discovered was that the money and the durability were in **the cross-connect** - the physical cable between two tenants. A customer chooses a building because of who is already inside it, and every new tenant makes the building more valuable to the next. That is a network effect expressed in concrete and copper, and it is why colocation consolidated into a handful of operators rather than staying a commodity property business.

**And then a loop.** Equinix acquired Switch and Data in 2010, and Switch and Data owned PAIX. The founders had left DEC to build a neutral exchange because the one they ran was not theirs; twelve years later their company bought it.

It listed on NASDAQ in August 2000, survived the dot-com collapse that removed most of its contemporaries, converted to a real estate investment trust in January 2015 - an acknowledgement that it is, structurally, a landlord - and by 2025 reported around 260 data centres in 33 countries and revenue of about $9.22B.

**Read beside four other entries here, the pattern is hard to miss.** CompTIA's value rests on belonging to no vendor, and whether that survives private equity is unresolved. Kyndryl's advice became worth more the moment IBM stopped owning it. FreeRADIUS stayed open and became the thing everyone builds against. Equinix went furthest: **it did not merely benefit from neutrality, it discovered that neutrality could be sold by the square foot.**