TopGolf, and thus WGT, a division of TopGolf, is a for profit company. They have a budget that covers fixed costs as well as money spent on new developments and expansion.This is an entertainment company so one can expect that most of their development budget will be aimed at their most profitable business.
While we can't see their P & L statement, looking at available information suggests that the profit comes from the TopGolf venues. TopGolf venues are a mix of profit centers from the driving range to the food service to the bars. Their primary users are in the 18 to 34 age group (54%).
WGT's profit center is their advertising . People will say it comes from the sale of virtual balls, but that may be a flawed idea since so many "free" credits are derived from these advertisers.
I live near a new TopGolf venue that will be opening this summer. It is a large development that has taken a major investment in construction as well as a site purchase in area where where land prices have risen due to other developments. Obviously TopGolf considers this investment as the best use of their money.
Mapping costs of a new course as well as any fees paid to the course would not bring NEW business to WGT and thus to TopGolf. That new business is key. A new user on WGT is excited because there are many courses to play. Why put in a costly new course only to satisfy the older users who still play. That same new course does not increase the advertising dollars because the advertisers only care about user contacts. Since WGT does not cull their membership lists, no one really knows how many ACTIVE users exist.
Best guess, based on history and TopGolf's venue expansion, is that the active players group is shrinking. The demographic that is into PC gaming is not that interested in games such as WGT. Simple economics thus says to put money into the 18 to 34 bracket, which TopGolf is doing. Don't look for a new WGT course unless it can in some way become a profit center. Since it can't, it won't happen.