The world is a free market economy with prices and costs driven by supply and demand.
Normally there is no spare capacity in the system - the simple reason that spare capacity costs money. This is also the case with (for instance) NHS and schools - if spare capacity emerges it is quickly filled with activity.
Covid has destabilised the market. Some companies will have made very high profits, others will have gone to the wall.
Shipping costs are typically a small part of total product costs - particularly with respect to higher value, lower unit volume items - eg: electronics, consumer durables, tools, clothing etc.
A 40ft container may hold 180 ovens, 800 hobs, or 2000 laptops. Previously a container from China cost ~$2000. Cost per unit is $1-10 for products selling for $300-1000. Even with much higher shipping costs, shipping is still a small part of total cost.
The question is "how long will it be before normal prices and service are resumed". Until then those who can profit, will!