Yes, all countries are guilty of this.
25%% gives you a one to two base margin.
30% means one country could be left with 40%. On some maps like Ndilies, it can be a reason to log off.
If Hitech does not agree with the 25% rule consider a different option. Consider reducing the number of GV walls. That is a multiple base arrangement where a whole line of bases has no GV access by spawns. Often, on some maps, that is where base capture stops.
Another option is to increase a C47 troop carrying capacity to its real world WW2 capacity of up to 28 paratroopers instead of 10. Leave base capture at 10.