Maybe that is more telling about the conditions of the market that they can't make money on them, so no investment. There was a render floating around of a next gen Ecosport, but that hasn't come to pass yet.
The larger Tacoma and the smaller Hilux didn't merge but both outsell the Ranger in majority of their key markets. The new Ranger did overtake the outgoing Hilux in Australia when it was launched. Toyota chose to use its larger and wider TNGA-F architecture for the Tacoma. In South Africa, Toyota sells rebadged small Maruti Suzuki models because there is a trade agreement between South Africa and India. Toyota has a 4.94% stake in Suzuki. Compared to Ford which has only 1 true global model the Ranger, followed by the Mustang. Looking at Toyota, they have more global models stretching from the Corolla Cross to the Land Cruiser. Hilux is almost global since it is Toyota's midsize pickup outside the USA and Canada.
I mentioned this before, Ford killed ICE models for VW-based EVs, now they announce plans for Renault-based EVs. Ford still has no direct replacement for its discontinued small models in Asia-Pacific and South America.