What "high end electronics" would be taxed at a medium rate? Do billionaires not just use iPhones? Most high end private planes are the same models as regional jets (e.g. Embraer ERJ line), so a tax on them would still be mostly impacting normal folks' plane tickets.
The core problem remains the same: consumption does not scale with wealth. If we limit taxes go a handful of goods and services, then demand is just going to shift to something else.