Let’s throw Solwers Oyj in here for contemplation - a news article behind a paywall, a few quotes below.
“Solwers, a company offering construction consulting and digital solutions, aiming to go public next autumn, is already diligently preparing for listing.”
“The company has been preparing for over a year now. According to Sebbas, all actions have been geared towards going public. The share issue through Invesdor over a year ago was also arranged for learning purposes.\n*”We treated the arrangement of the issue as a practice round. In addition to capital, we sought 200 new shareholders, which we got,” Sebbas says. The company raised one and a half million euros through the issue.”*
The company has prepared its financial statements according to IFRS (International Financial Reporting Standards) from the outset.
The company’s business areas are infrastructure construction, commercial construction, and digital services.
“”Our operating model is based on smaller, manageable operating environments and specialized experts. A common corporate governance then defines the limits for independence, risk management, and reporting,” Sebbas says.”
In my opinion, infrastructure construction will likely receive a boost as governments shift into recovery gear.
Disclaimer:
I am one of those 200 new shareholders 
A couple of other similar risk investments have already failed, and those losses have been reported to the tax authorities 
In addition to Solwers, another unlisted experiment, Yeply, seems to be progressing better than expected. Mobile bike maintenance is getting timely support from the current situation; bike sales have increased significantly, and soon they’ll need maintenance too 
Let’s also add potential IPO candidates based on KL’s news, also behind a paywall.
Additionally, at least Delete Group and M-Brain have seemingly been on track for an IPO at some point. Those plans might still be waiting for improved results 