$15K for Yamaha NS-5000's (with powerful class D amps) is all you need to spend. I attend quite a few live music venues in Las Vegas so I do not try to equate my home system with what I hear in shows. It's not going to happen unless you own a 500 seat hall with line arrays and cash flow to book good artists.
Recall I write "all you need to spend." You can do it for less. Price is like the number of flips a gymnast can do, degree of difficulty. $80K for a system is not that difficult, compared to $5K. The Yamaha model I cite was done by a team of young engineers in the world's largest musical instrument company leveraging tech synchronies from their other divisions. No "high end" brand has these resources.

