IMO, the revenues for PTOTF should cross 100 Mn. in less than 5 years positively.
To give you a comparison, SSTI operates in the similar industry and their stock price was $60+ in September'18. They'll cross $100 Mn. in 2018 ($55 Mn. in Q1 and Q2 combined) and did around $80 Mn. last year. Hope this gives you something to compare with :-)
So, our 10k share today should be worth at least $500k by 2023 :-)