FoxBASE was really a dBASE III clone (but better in many ways). The next step in the evolution was FoxPro, which began to move away from true compatibility with the dBASE language.
dBASE caught up (and in many ways leap-frogged) to some extent when dBASE 5.0 for DOS was released; but unfortunately that was the last hurrah of dBASE for DOS.
But yes, I agree, Fox - and especially FoxPro 2.6 for DOS (the last one), is the language of the Gods!
And ... as you hinted at, it runs very nicely and does good work on "primitive" machines - and even (as I sometimes do) on top of emulators such as DOSBox, vDos, vDosPlus et al
running in Windows.
Quality software never really dies, despite the best efforts of Microsoft (in the case of Visual FoxPro) to kill it off. Gee-whiz
wonderware comes and goes, but solid coding platforms simply soldier on doing real work (often behind the scenes of today's "pretty interfaces").