So, as the article states, he is a very interesting guy.
Vista Equity Partners owns several assets outright. The largest is Finastra which is HQ'ed in London but has substantial assets in the USA. He is very invested in openness and diversity. Many of his senior people are minorities: far higher than the average. SMT members are given a bonus on diversity of their staff.
What he does is buy software companies who's product is proven in the market but mismanaged. His theory is that software companies are run by technology entrepreneurs who either are underfunded, poor business managers or don't want to manage a business. So Vista has these things named V-SOPs witch are "Vista Standard Operating Procedures". He typically will take the tangential burden off the software company (HR, AR/AP, implementation, data center operations, support) away and allow them to concentrate on innovation and development. It is painful but very smart.
Unfortunately, investment is private and there is no public offering.
Here is an article, about a year old, that goes into his philosophy in greater detail.
We need more of this guy...much, much more. he likes to use an African saying: "if you want to go fast, go alone. If you want to go far, go with friends." I use that a lot in business.
That is a great "saying".