I don't think tanks are going away anytime soon. Nothing else offers the same degree of mobility, armor, and firepower. Sure, a Javelin is cheaper than a tank,

I don't think tanks are going away anytime soon. Nothing else offers the same degree of mobility, armor, and firepower. Sure, a Javelin is cheaper than a tank, but a bullet is cheaper than a soldier and we don't talk about infantry being obsolete. People think of tanks as just lumbering around the battlefield shooting at targets, but they employ fire-and-maneuver tactics the same as infantry. So in combat a tank will be moving from cover to cover, with additional tanks providing suppressive fires from protected positions. Tanks don't move around on their own, they are always fighting as part of at least a platoon (a platoon is 3-4 tanks depending on the country) of other tanks, and almost always with infantry support. I think improvements in APS and maybe some new reactive armor will be enough to keep the balance between ATGM and tank more or less in the same place it was in the 1980s.