The big thing in the overall space is that the software side of ag lags behind profitability in the industry. The company I worked for was 6 people (fte 3 devs), and we were running on a .NET WebForms platform originally written in 2005 that we didn't have the time or resources to bring nearly 250kloc to something more modern. (That includes web, backend processes, api, our mobile app platform was another 40kloc)
Hopefully, modern web/big data/etc tech allows small farmers to move past occasional profitability to thriving growth, not just allows big companies to capture more profits.
Farming is a unique business where the average farm generates $1+ million of revenue and is self-managed.
I agree with this article. More farmers are taking on the duties of merchandising their commodities and we help them with that. It's a fun challenge.
As an aside, selling intangible goods like software to farmers (who love equipment) is not for the faint of heart!
In my country (Finland) farms are folding faster than ever due to driest summer of the century. Still the food prize isn't going up - neither the profits of the companies selling their products.
ABC(C)D. Dreyfus is in between Bunge and ADM in terms of revenue and quite influential in Africa and some parts of Latam (Cargill is the outsized one, twice as large as any of the other and culturally quite different). Continental (now ContiGroup) is about a fifth as large as e.g. Dreyfus so doesn't quite count.
I would recommend the ageing, but still relevant Merchants of Grains  for a better understanding of the dynamics of this industry. More modern books - such as Marc Rich's biography - are too sanitised. As you hint, it can't really be "disrupted" by technology - the advantages these companies have are more geopolitical than informational. My position reporting platform in the late 2000s dated from 1994 and had never been updated; despite 5-6 layers of control, some faulty trades (e.g. FX hedge the wrong way) were not caught for months. Some heads of trading desks could negotiate with ministers profitably, but had trouble understanding simple derivatives.