The title of this article ends with an question mark because I don't know the answer myself and I'm very curious how you think about this topic.
First, what is an asset class for the investors in general?
Definition of an asset class
An asset class is a group of securities that exhibits similar characteristics, behaves similarly in the marketplace and is subject to the same laws and regulations. The three main asset classes are equities, or stocks; fixed income, or bonds; and cash equivalents, or money market instruments. Some investment professionals add real estate and commodities, and possibly other types of investments, to the asset class mix.
Source: Investopedia

This is my opinion: the crypto market is not yet an asset class because it is too speculative at this stage. At the moment, various investment companies (Fidelity, Goldman Sachs, JPM Morgan) are retiring to set up a specialized desk focused on crypto currencies. It is a sign that the market is being watched closely, but that the assett class is not yet fully regulated as an mature one.
Moreover, the legislation and regulation is a difficult issue, which in recent weeks caused the continuing losses on the markets. Regulation will come, but it is up to the business itself to actively respond to this. Cryto currencies are, in my view, very transparent, and have a huge advantage compared to our domestic fiat infrastructure. It is a matter of time before large companies embrace this way handling.

Conclusion. It is still an immature market, but I am convinced that it will be considered as a recognized asset class within 5 years. SO the investers nowadays are still early adopters.
The issue from a regulatory point of view is that cryptos are specifically designed to function in a P2P manner.
This single characteristic separates cryptos from all other legal assets, which can be confiscated at will by the legal/regulatory establishment.
True.
RT BTC $9.300.
Up lmost 25% since 2 weeks ago.
MC total 451 bln.
LTC above $200 again.
If BTC is worth 100K will LTC be worth 2K?
Steem above $4,25.
16.864K BTC already mined.
What do you think the price of Bitcoin will be at the end of 2018?
total MC 476bln.
BTC DOM now at 36%.
Litecoin and MOnero are the biggest winners.
High MC 481 bln.
Some positove news out from South Korea, trading approved.
Iota back above $2.
The markets are up again.
looks like we are bottoming out at these levels.
Low Mc today 451 bln.
RT EUR 7.528,-
Volume on Kraken exchange is increasing.
RT BTC 10.100USD.
Only 4.135K BTC keft to mine.
Litecoin is performing well.
RT xrp 1,14.
What will BTC do at the end of this year?
ETH 527usd.
Total MC is now 509bln.
Bitcoin market share is 39,4%
MC intraday range:
low 499bln.
high 516bln.
164.2bln market cap BTC.
Only 4.114K btc left to mine.
Litecoin and Bitcoin are the big winners last week.
What will we see first regarding the bitcoin price?
$12.500 or $10.500?
etc 16,80
BTC RT 9.739
Bitcoin back above 10K again. (10.154USD)
2018 is the year of regulation.
rt btc 8335 usd
Already 16.877 BTC are mined.
xvg 0,09
NANO loses 25%
Bitcoin cash is also rising, $1.520.
xrp 0,67
Will Bitcoin Cash or Botcoin Gold ever be equal valued as BTC?
BTC market share is 38,2%
ppt 16,36
STM 3,50
Total MC is 483bln.
BCH 784
16.885k BTC already mined.
Bitcoin share is 35,5%
EOS 8,49
RT $11.160