Remember that markets are heavily manipulated and technical analysis no longer works.
Actually TA still works. In fact your description of price inertia fits in perfectly with TA. I'm doing something very similar with a strategy based on two conventional technical indicators that shall remain nameless.
This is the best definition of technical analysis I've found :
Technical analysis is
any method for generating trading signals, said method being based
solely on past and present price data and/or volume data of a security.
This includes both quantifiable and unquantifiable methods, including mathematical formulae (RSI and ADX), trendlines, pattern recognition (wedges, triangles, flags, head-and-shoulders, etc.), candlestick interpretations, etc. TA is a broad collection of methods, some logic-based and others purely intuitional.
The definition in Wikipedia is flawed. TA need not involve forecasting, and bar-by-bar PA practitioners pride themselves on focusing on present data, not past data.
Good luck with your research.