Why none of high-end speakers offer Speakon?

Hi everyone! I am kind of new to all the high-end electronics and have started to build a system. I have already payed 8K for a tube pre-amp (Einstein The t8be MK2) and will be buying speakers and amplifiers next. I have noticed though that all the pro-audio equipment use speak on connection, while none of the high-end amps or speakers use this. Just looking superficially, it seems this type of a connection will be better than either spade or banana plugs. Why don't the high-end speakers offer this type of a connection? same goes for amps. Anyone can comment on this?

This whole thing started to kind of worry me. Looking at pro-audio equipment, one can buy a 2000 watt amp for about 1-2K. Is pro-audio used in recording studios that bad? Did I just pay 8K for a preamp for just its looks and hype?